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Diet and body fat in adolescence and early adulthood: a systematic review of longitudinal studies

Dieta e gordura corporal na adolescência e início da vida adulta: uma revisão sistemática de estudos longitudinais

Abstract

Adipose tissue is a vital component of the human body, but in excess, it represents a risk to health. According to the World Health Organization, one of the main factors determining excessive body adiposity is the dietary habit. This systematic review investigated longitudinal studies that assessed the association between diet and body fat in adolescents and young adults. Twenty-one relevant papers published between 2001 and 2015 were selected. The most used method for estimating body fat was the body mass index (15 studies). Diet was most commonly assessed by estimating the consumption of food groups (cereals, milk and dairy products) and specific foods (sugar-sweetened beverages, soft drinks, fast foods, milk, etc.). Ten studies found a direct association between diet and quantity of body fat. During adolescence, adhering to a dietary pattern characterized by high consumption of energy-dense food, fast foods, sugar-sweetened beverages and soft drinks, as well as low fiber intake, appears to contribute to an increase in body fat in early adulthood. The findings of the present study suggest that the frequent consumption of unhealthy foods and food groups (higher energy density and lower nutrient content) in adolescence is associated with higher quantity of body fat in early adulthood.

Diet; Body fat; Adolescent; Early adulthood

Resumo

O tecido adiposo é um componente vital do corpo humano, mas em excesso representa risco à saúde. Conforme a Organização Mundial da Saúde, um dos principais fatores determinantes do excesso de peso é o hábito alimentar. Essa revisão sistemática investigou estudos longitudinais que avaliaram a relação entre dieta e gordura corporal em adolescentes e adultos jovens. Vinte e um artigos publicados de 2001 a 2015 foram selecionados. O método mais utilizado para estimar gordura corporal foi o índice de massa corporal (15 estudos). A dieta foi avaliada principalmente pelo consumo de grupos alimentares (cereais, leite e produtos lácteos) e alimentos específicos (bebidas açucaradas, refrigerantes, “fast foods”, leite e etc.). Dez estudos encontraram uma associação direta entre dieta e quantidade de gordura corporal. Um padrão alimentar com alto consumo energético e de gordura e baixo de fibras e o hábito de consumir “fast foods”, bebidas açucaradas e refrigerantes na adolescência, contribuíram para um aumento da gordura corporal no início da vida adulta. Os achados deste estudo sugerem que o consumo de alimentos específicos e grupos de alimentos não saudáveis (alta densidade energética e baixo conteúdo de nutrientes) na adolescência e início da vida adulta estão associados com maior quantidade de gordura corporal.

Dieta; Gordura corporal; Adolescente; Adulto jovem

Introduction

Adipose tissue is a vital component of the human body. It helps maintain thermal homeostasis and is the main energy store during periods of nutritional shortage11. Zafon C. Oscillations in total body fat content through life: an evolutionary perspective. Obes Rev 2007; 8(6):525-530.. The total body fat (BF) content oscillates throughout life, and although varying widely among populations, it generally represents around 15% of men’s body weight and 25% of women’s body weight11. Zafon C. Oscillations in total body fat content through life: an evolutionary perspective. Obes Rev 2007; 8(6):525-530.,22. Wells JC. Sexual dimorphism of body composition. Best Pract Res Clin Endocrinol Metab 2007; 21(3):415-430..

Obesity is defined as an abnormal or excessive fat accumulation that poses a risk to health33. WHO/FAO release independent expert report on diet and chronic disease. Saudi Med J 2003; 24(10):1154-1156.. A crude population measure of obesity is the body mass index (BMI), calculated by dividing a person’s weight (in kilograms) by the square of its height (in meters). An individual with a BMI ≥ 30 kg/m2 is considered as obese33. WHO/FAO release independent expert report on diet and chronic disease. Saudi Med J 2003; 24(10):1154-1156.. Obesity is an independent risk factor for the development of cardiovascular diseases (CVD) and is associated with a shortening of life expectancy at the population level33. WHO/FAO release independent expert report on diet and chronic disease. Saudi Med J 2003; 24(10):1154-1156.,44. Nedungadi TP, Clegg DJ. Sexual dimorphism in body fat distribution and risk for cardiovascular diseases. J Cardiovasc Transl Res 2009; 2(3):321-327.. According to the World Health Organization, over 1.9 billion adults aged 18 years or more were overweight in 2014. Of these, over 600 million were obese55. World Health Organization (WHO). Global status report on noncommunicable diseases 2014. Geneva: WHO Library Cataloguing-in-Publication Data; 2014.. The etiology of excess BF is multifactorial, involving biological, economic, social and cultural aspects. Among these factors, a positive energy balance is considered as a direct determinant of fat accumulation66. Oda E. Obesity-related risk factors of cardiovascular disease. Circ J 2009; 73(12):2204-2245.,77. Prentice AM. Obesity and its potential mechanistic basis. Br Med Bull 2001; 60:51-67.. The frequent consumption of high energy-dense food, rich in simple sugars, saturated fat, sodium, and food additives, as well as low fiber and micronutrients intake, have been associated with excessive accumulation of BF88. Singh PN, Arthur KN, Orlich MJ, James W, Purty A, Job JS, Rajaram S, Sabaté J. Global epidemiology of obesity, vegetarian dietary patterns, and noncommunicable disease in Asian Indians. Am J Clin Nutr 2014; 100(Supl. 1):359S-364S..

Adolescence is a critical period for the development of obesity11. Zafon C. Oscillations in total body fat content through life: an evolutionary perspective. Obes Rev 2007; 8(6):525-530.. There is an increase in the number of adipose cells, frequent in the morphologic and physiologic changes associated with inadequate dieting, elevate the risk of developing obesity11. Zafon C. Oscillations in total body fat content through life: an evolutionary perspective. Obes Rev 2007; 8(6):525-530.,77. Prentice AM. Obesity and its potential mechanistic basis. Br Med Bull 2001; 60:51-67..

To our best knowledge, no systematic review or meta-analysis has been conducted addressing the relationship between diet and excess BF in adolescents and young adults. Therefore, the aim of the present study was to investigate the longitudinal association of diet on the amount of BF, in adolescents and young adults, through a systematic review.

Methods

Search strategy

Articles indexed on the U.S National Library of Medicine and the National Institutes Health (PubMed) electronic database and published up to March 2015 were searched. We opted to conduct searches only in this database because a previous study has shown that the large majority of articles on this topic is available in PubMed.

A combination of terms involving the exposure (diet), the outcome (body fat), age group (adolescence and early adulthood) and study design (longitudinal) was employed. The following search terms were selected: “(body fat OR fat mass OR adiposity) AND (diet OR food consumption OR pattern diet OR dietary pattern OR food intake OR dietary food) AND (adolescent OR adolescence OR teenage OR teenager OR young adult OR early adult) AND (longitudinal studies OR cohort OR prospective OR follow up OR panel)”. We included only those articles published in Portuguese, Spanish and English, in which the selected search terms appeared in the title and/or abstracts.

In addition, the references cited in the selected articles were reviewed in order to identify other potentially eligible studies.

Eligibility Criteria

The following eligibility criteria were adopted: 1) to have a longitudinal design; 2) to address the relationship between diet and BF; 3) to evaluate the exposure during adolescence (age 10 to 19 years); 4) to evaluate the outcome during adolescence or early adult life.

We considered as eligible all studies applying any available method to estimate the body fat (BF), such as BMI, skinfold thickness, fat mass index (FMI) and adiposity index (AI). Similarly, studies using any available method for assessing diet were considered, including the assessment of specific food or nutrients, food groups, macronutrients (carbohydrate, protein and fat), energy consumption, dietary patterns (DP) or dietary index.

Selection of studies

Two authors of the article (B.C.S. and S.P.O.) carried out, independently, the selection of the studies. Initially, the articles were retrieved from an electronic database and, subsequently, the abstracts were reviewed considering the eligibility criteria. A third evaluator (S.C.D.) conducted the assessment of the articles in case of absence of consensus.

The development and presentation of this study followed the recommendations of the MOOSE - Meta-analysis of Observational Studies in Epidemiology99. Stroup DF, Berlin JA, Morton SC, Olkin I, Williamson GD, Rennie D, Moher D, Becker BJ, Sipe TA, Thacker SB. Meta-analysis of observational studies in epidemiology: a proposal for reporting. Meta-analysis Of Observational Studies in Epidemiology (MOOSE) group. JAMA 2000; 283(15):2008-2012., which is a checklist that summarizes the main specifications that must be considered in systematic reviews of observational studies.

Exploratory data analysis

From each of the articles selected, we extracted data on the study site and year of publication, sample size, population under study, age of participants at baseline, follow-up period, method and tool used to evaluate diet, body measurements, equipment used to evaluate BF, periods of evaluation of exposure and outcome, main findings and adjustment variables.

Results

Initially, 1,062 titles were retrieved. Based on the eligibility criteria, the researchers selected 23 articles for deeper analysis, one of which was identified through the revision of the references cited in the selected articles. Of the studies initially selected, the reviewers disagreed over twelve articles and, after assessment by a third reviewer (S.C.D.), three of those were excluded. The main reasons for disagreement between the reviewers were related to the age at the assessment of the exposure or of the outcome. Studies that assessed body fat only in adulthood were excluded. At the end of the selection process, 21 articles matched the eligibility criteria. Further details of the selection process are shown in Figure 1.

Figure 1
Selection of scientific articles flowchart.

The selected studies were published between 2001 and 2015 and half of them were carried out in the United States. The samples varied from 1961010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113. to 14,6101111. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85. individuals, with an average size of 2645.5 (SD = 3849.3) and median of 856. Four studies included only females1010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113.,1212. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780.

13. Cheng S, Völgyi E, Tylavsky FA, Lyytikäinen A, Törmäkangas T. Trait-specific tracking and determinants of body composition: a 7-year follow-up study of pubertal growth in girls. BMC Medicine 2009; 7:5.
-1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.. The age at baseline ranged from two1515. Magarey AM, Daniels LA, Boulton TJC, Cockington R. Does fat intake predict adiposity in healthy children and adolescents aged 2-15 y? A longitudinal analysis. Eur J Clin Nutr 2001; 55(6):471-481. to 18 years old1616. Libuda L, Kersting M, Alexy M. Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents. Public Health Nutr 2011; 15(3):433-441.,1717. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.. Follow-up had a minimal duration of two years1111. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.,1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.,1919. Lin SS, Tarrant M, Hui LL, Kwok MK, Lam TH. The Role of Dairy Products and Milk in Adolescent Obesity: Evidence from Hong Kong’s ‘‘Children of 1997’’ Birth Cohort. PLoS One 2012; 7(12):e52575. and maximum of 13 years1515. Magarey AM, Daniels LA, Boulton TJC, Cockington R. Does fat intake predict adiposity in healthy children and adolescents aged 2-15 y? A longitudinal analysis. Eur J Clin Nutr 2001; 55(6):471-481.,2020. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305.. The average duration of follow-up was 6.0 years (SD = 2.9) and median of five years. Chart 1 presents details of the articles selected.

Chart 1
Summary of selected articles.

Dietary evaluation methods

The exposure (diet) was evaluated using several methods, such as food group consumption (milk and dairy products, cereals, etc.) by six studies1010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113.,1212. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780.,1919. Lin SS, Tarrant M, Hui LL, Kwok MK, Lam TH. The Role of Dairy Products and Milk in Adolescent Obesity: Evidence from Hong Kong’s ‘‘Children of 1997’’ Birth Cohort. PLoS One 2012; 7(12):e52575.,2121. Noel SE, Ness AR, Northstone K, Emmett P, Newby PK. Milk Intakes Are Not Associated with Percent Body Fat in Children from Ages 10 to 13 Years. J Nutr 2011; 141(11):2035-2041.

22. Berkey CS, Rockett HR, Field AE, Gillman MW, Frazier AL, Camargo Junior CA, Colditz GA. Activity, dietary intake, and weight changes in a longitudinal study of preadolescent and adolescent boys and girls. Pediatrics 2000; 105(4):E56.
-2323. Bigornia SJ, LaValley MP, Moore LL, Northstone K, Emmett P, Ness AR, Newby PK. Dairy Intakes at Age 10 Years Do Not Adversely Affect Risk of Excess Adiposity at 13 Years. J Nutr 2014; 144(7):1081-1090., specific food (sugar-sweetened beverages, soft drink, fast food, etc.) by seven1111. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.,1616. Libuda L, Kersting M, Alexy M. Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents. Public Health Nutr 2011; 15(3):433-441.

17. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.
-1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.,2424. Mundt CA, Baxter-Jones ADG, Whiting SJ, Bailey DA, Faulkner RA, Mirwald RL. Relationships of Activity and Sugar Drink Intake on Fat Mass Development in Youths. Med Sci Sports Exerc 2006; 38(7):1245-1254.

25. Feeley AB, Musenge E, Pettifor JM, Norris SA. Investigation into longitudinal dietary behaviours and household socio-economic indicators and their association with BMI Z-score and fat mass in South African adolescents: the Birth to Twenty (Bt20) cohort. Public Health Nutr 2012; 16(4):693-703.
-2626. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262., macronutrients (carbohydrate, protein and fat) by three1515. Magarey AM, Daniels LA, Boulton TJC, Cockington R. Does fat intake predict adiposity in healthy children and adolescents aged 2-15 y? A longitudinal analysis. Eur J Clin Nutr 2001; 55(6):471-481.,2727. Assmann KE, Joslowski G, Buyken AE, Cheng G, Remer T, Kroke A, Günther AL. Prospective Association of Protein Intake During Puberty with Body Composition in Young Adulthood. Obesity 2013; 21(12):E782-789.,2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890., total energy intake by one2929. Fulton JE, Dai S, Lyn MS, Grunbaum JA, Shah AM. Physical Activity, Energy Intake, Sedentary Behavior and Adiposity inYounth. Am J Prev Med 2009; 37(1 Supl.):S40-S49., dietary index by one1313. Cheng S, Völgyi E, Tylavsky FA, Lyytikäinen A, Törmäkangas T. Trait-specific tracking and determinants of body composition: a 7-year follow-up study of pubertal growth in girls. BMC Medicine 2009; 7:5. and DP by three investigations1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.,2020. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305.,3030. Cutler GJ. Association between major patterns of dietary and weight status in adolescents. Br J Nutr 2011; 108(2):349-356.. The tools used for estimating food consumption were the food frequency questionnaire (FFQ) in ten studies1010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113.

11. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.
-1212. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780.,1919. Lin SS, Tarrant M, Hui LL, Kwok MK, Lam TH. The Role of Dairy Products and Milk in Adolescent Obesity: Evidence from Hong Kong’s ‘‘Children of 1997’’ Birth Cohort. PLoS One 2012; 7(12):e52575.,2222. Berkey CS, Rockett HR, Field AE, Gillman MW, Frazier AL, Camargo Junior CA, Colditz GA. Activity, dietary intake, and weight changes in a longitudinal study of preadolescent and adolescent boys and girls. Pediatrics 2000; 105(4):E56.,2525. Feeley AB, Musenge E, Pettifor JM, Norris SA. Investigation into longitudinal dietary behaviours and household socio-economic indicators and their association with BMI Z-score and fat mass in South African adolescents: the Birth to Twenty (Bt20) cohort. Public Health Nutr 2012; 16(4):693-703.,2626. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262.,2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890.

29. Fulton JE, Dai S, Lyn MS, Grunbaum JA, Shah AM. Physical Activity, Energy Intake, Sedentary Behavior and Adiposity inYounth. Am J Prev Med 2009; 37(1 Supl.):S40-S49.
-3030. Cutler GJ. Association between major patterns of dietary and weight status in adolescents. Br J Nutr 2011; 108(2):349-356., food record (FR) in nine1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.

15. Magarey AM, Daniels LA, Boulton TJC, Cockington R. Does fat intake predict adiposity in healthy children and adolescents aged 2-15 y? A longitudinal analysis. Eur J Clin Nutr 2001; 55(6):471-481.

16. Libuda L, Kersting M, Alexy M. Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents. Public Health Nutr 2011; 15(3):433-441.
-1717. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.,2020. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305.,2121. Noel SE, Ness AR, Northstone K, Emmett P, Newby PK. Milk Intakes Are Not Associated with Percent Body Fat in Children from Ages 10 to 13 Years. J Nutr 2011; 141(11):2035-2041.,2323. Bigornia SJ, LaValley MP, Moore LL, Northstone K, Emmett P, Ness AR, Newby PK. Dairy Intakes at Age 10 Years Do Not Adversely Affect Risk of Excess Adiposity at 13 Years. J Nutr 2014; 144(7):1081-1090.,2727. Assmann KE, Joslowski G, Buyken AE, Cheng G, Remer T, Kroke A, Günther AL. Prospective Association of Protein Intake During Puberty with Body Composition in Young Adulthood. Obesity 2013; 21(12):E782-789. and 24-hour recall (R24h) in three studies1212. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780.,1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.,2424. Mundt CA, Baxter-Jones ADG, Whiting SJ, Bailey DA, Faulkner RA, Mirwald RL. Relationships of Activity and Sugar Drink Intake on Fat Mass Development in Youths. Med Sci Sports Exerc 2006; 38(7):1245-1254.. The use of FFQ together with R24h was observed in one study1212. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780..

Body Fat evaluation methods

The BF outcome was evaluated based on BMI in fifteen studies1010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113.,1111. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.,1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.

15. Magarey AM, Daniels LA, Boulton TJC, Cockington R. Does fat intake predict adiposity in healthy children and adolescents aged 2-15 y? A longitudinal analysis. Eur J Clin Nutr 2001; 55(6):471-481.

16. Libuda L, Kersting M, Alexy M. Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents. Public Health Nutr 2011; 15(3):433-441.

17. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.

18. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.
-1919. Lin SS, Tarrant M, Hui LL, Kwok MK, Lam TH. The Role of Dairy Products and Milk in Adolescent Obesity: Evidence from Hong Kong’s ‘‘Children of 1997’’ Birth Cohort. PLoS One 2012; 7(12):e52575.,2222. Berkey CS, Rockett HR, Field AE, Gillman MW, Frazier AL, Camargo Junior CA, Colditz GA. Activity, dietary intake, and weight changes in a longitudinal study of preadolescent and adolescent boys and girls. Pediatrics 2000; 105(4):E56.,2323. Bigornia SJ, LaValley MP, Moore LL, Northstone K, Emmett P, Ness AR, Newby PK. Dairy Intakes at Age 10 Years Do Not Adversely Affect Risk of Excess Adiposity at 13 Years. J Nutr 2014; 144(7):1081-1090.,2525. Feeley AB, Musenge E, Pettifor JM, Norris SA. Investigation into longitudinal dietary behaviours and household socio-economic indicators and their association with BMI Z-score and fat mass in South African adolescents: the Birth to Twenty (Bt20) cohort. Public Health Nutr 2012; 16(4):693-703.,2626. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262.,2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890.

29. Fulton JE, Dai S, Lyn MS, Grunbaum JA, Shah AM. Physical Activity, Energy Intake, Sedentary Behavior and Adiposity inYounth. Am J Prev Med 2009; 37(1 Supl.):S40-S49.
-3030. Cutler GJ. Association between major patterns of dietary and weight status in adolescents. Br J Nutr 2011; 108(2):349-356., %BF in thirteen1010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113.

11. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.

12. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780.

13. Cheng S, Völgyi E, Tylavsky FA, Lyytikäinen A, Törmäkangas T. Trait-specific tracking and determinants of body composition: a 7-year follow-up study of pubertal growth in girls. BMC Medicine 2009; 7:5.
-1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.,1616. Libuda L, Kersting M, Alexy M. Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents. Public Health Nutr 2011; 15(3):433-441.

17. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.
-1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.,2121. Noel SE, Ness AR, Northstone K, Emmett P, Newby PK. Milk Intakes Are Not Associated with Percent Body Fat in Children from Ages 10 to 13 Years. J Nutr 2011; 141(11):2035-2041.,2424. Mundt CA, Baxter-Jones ADG, Whiting SJ, Bailey DA, Faulkner RA, Mirwald RL. Relationships of Activity and Sugar Drink Intake on Fat Mass Development in Youths. Med Sci Sports Exerc 2006; 38(7):1245-1254.,2626. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262.,2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890.,2929. Fulton JE, Dai S, Lyn MS, Grunbaum JA, Shah AM. Physical Activity, Energy Intake, Sedentary Behavior and Adiposity inYounth. Am J Prev Med 2009; 37(1 Supl.):S40-S49., BF kg in two2323. Bigornia SJ, LaValley MP, Moore LL, Northstone K, Emmett P, Ness AR, Newby PK. Dairy Intakes at Age 10 Years Do Not Adversely Affect Risk of Excess Adiposity at 13 Years. J Nutr 2014; 144(7):1081-1090.,2525. Feeley AB, Musenge E, Pettifor JM, Norris SA. Investigation into longitudinal dietary behaviours and household socio-economic indicators and their association with BMI Z-score and fat mass in South African adolescents: the Birth to Twenty (Bt20) cohort. Public Health Nutr 2012; 16(4):693-703., FMI or AI in two2020. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305.,2727. Assmann KE, Joslowski G, Buyken AE, Cheng G, Remer T, Kroke A, Günther AL. Prospective Association of Protein Intake During Puberty with Body Composition in Young Adulthood. Obesity 2013; 21(12):E782-789. and skinfold – tricipital (TS) and subscapular (SS) – thickness in one study1515. Magarey AM, Daniels LA, Boulton TJC, Cockington R. Does fat intake predict adiposity in healthy children and adolescents aged 2-15 y? A longitudinal analysis. Eur J Clin Nutr 2001; 55(6):471-481..

The AI proposed by Ambrosini et al.2020. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305. is based on a mathematical equation calculated as BF in kg divided by height in meters raised to the logarithmic power of the ratio of these measurements. The index was log-transformed to provide an approximation of a normal distribution and expressed in quintiles of z-score, with the highest score classified as “excess adiposity”. The FMI proposed by Assmann et al.2727. Assmann KE, Joslowski G, Buyken AE, Cheng G, Remer T, Kroke A, Günther AL. Prospective Association of Protein Intake During Puberty with Body Composition in Young Adulthood. Obesity 2013; 21(12):E782-789. used the equation: %BF*body mass/100. Out of twelve studies that evaluated %BF, five used electric bioimpedance1010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113.,1212. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780.,1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.,2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890.,2929. Fulton JE, Dai S, Lyn MS, Grunbaum JA, Shah AM. Physical Activity, Energy Intake, Sedentary Behavior and Adiposity inYounth. Am J Prev Med 2009; 37(1 Supl.):S40-S49., five Dual Energy X-ray Absorptiometry (DEXA)1111. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.,1313. Cheng S, Völgyi E, Tylavsky FA, Lyytikäinen A, Törmäkangas T. Trait-specific tracking and determinants of body composition: a 7-year follow-up study of pubertal growth in girls. BMC Medicine 2009; 7:5.,2121. Noel SE, Ness AR, Northstone K, Emmett P, Newby PK. Milk Intakes Are Not Associated with Percent Body Fat in Children from Ages 10 to 13 Years. J Nutr 2011; 141(11):2035-2041.,2424. Mundt CA, Baxter-Jones ADG, Whiting SJ, Bailey DA, Faulkner RA, Mirwald RL. Relationships of Activity and Sugar Drink Intake on Fat Mass Development in Youths. Med Sci Sports Exerc 2006; 38(7):1245-1254.,2626. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262. while the remaining studies used skinfold thickness for estimating this body component1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.,1616. Libuda L, Kersting M, Alexy M. Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents. Public Health Nutr 2011; 15(3):433-441.,1717. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.. Nine studies used BMI measures concomitantly with %BF1010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113.,1111. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.,1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.,1616. Libuda L, Kersting M, Alexy M. Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents. Public Health Nutr 2011; 15(3):433-441.

17. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.
-1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.,2626. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262.,2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890.,2929. Fulton JE, Dai S, Lyn MS, Grunbaum JA, Shah AM. Physical Activity, Energy Intake, Sedentary Behavior and Adiposity inYounth. Am J Prev Med 2009; 37(1 Supl.):S40-S49..

Relationship between diet and body fat

Of the 21 studies that evaluated the relationship between diet and BF, only ten found evidence of an association1111. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.

12. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780.
-1313. Cheng S, Völgyi E, Tylavsky FA, Lyytikäinen A, Törmäkangas T. Trait-specific tracking and determinants of body composition: a 7-year follow-up study of pubertal growth in girls. BMC Medicine 2009; 7:5.,1717. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.,2020. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305.,2525. Feeley AB, Musenge E, Pettifor JM, Norris SA. Investigation into longitudinal dietary behaviours and household socio-economic indicators and their association with BMI Z-score and fat mass in South African adolescents: the Birth to Twenty (Bt20) cohort. Public Health Nutr 2012; 16(4):693-703.

26. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262.

27. Assmann KE, Joslowski G, Buyken AE, Cheng G, Remer T, Kroke A, Günther AL. Prospective Association of Protein Intake During Puberty with Body Composition in Young Adulthood. Obesity 2013; 21(12):E782-789.
-2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890.,3030. Cutler GJ. Association between major patterns of dietary and weight status in adolescents. Br J Nutr 2011; 108(2):349-356.. The findings of these studies will be described in the following sections, according to the method used for estimating body fat.

Body Mass Index (BMI). The intake of some specifics foods was shown to be positively associated with BMI in adolescents and young adults. Fraser et al.1111. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85. found that the habit of consuming fast food at the age of thirteen increases 1.23-fold (95%CI, 1.02 to 1.49) the chance of becoming obese at the age of fifteen. According to the authors, this eating habit increases the BMI in this age group by 0.08 kg/m22. Wells JC. Sexual dimorphism of body composition. Best Pract Res Clin Endocrinol Metab 2007; 21(3):415-430. (95%CI, 0.03 to 0.14). In Australia girls, Gopinath et al.2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890. found that each 1SD increase in a dietary glycemic load was associated with 0.77 kg/m22. Wells JC. Sexual dimorphism of body composition. Best Pract Res Clin Endocrinol Metab 2007; 21(3):415-430. increase in BMI (p < 0.01) five years later; in addition, each 1SD increase in a dietary fiber intake was associated with 0.44 kg/m2 decrease (p < 0.02) in BMI. Similarly, results from the Dortmund Nutritional Anthropometric Longitudinally Designed Study showed that sugar-sweetened beverages and regular soft drink consumption during adolescence increased BMI Z score by 0.07 (p = 0.01) and 0.1 (p = 0.01), respectively, in females during early adulthood. This association was not found among young males1717. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.. In South Africa, Feely et al.2525. Feeley AB, Musenge E, Pettifor JM, Norris SA. Investigation into longitudinal dietary behaviours and household socio-economic indicators and their association with BMI Z-score and fat mass in South African adolescents: the Birth to Twenty (Bt20) cohort. Public Health Nutr 2012; 16(4):693-703. found that the sugar-sweetened beverages consumption twice a week or more at age 13 years by males increased 0.04 kg/m2 (95% CI 0.02-0.07) BMI Z-score at 17 years (p < 0.001). Conversely, a study evaluating 693 participants with average age at baseline 14.6 of two American longitudinal projects: Identifying Determinants of Eating and Activity (IDEA) and Etiology of Childhood Obesity (ECHO), found no evidence of association between consumption of sugar-sweetened beverages, diet soft drink, fast food and BMI two years later1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.. In the Netherlands, results from the Amsterdam Growth and Health Longitudinal Study (AGAHLS) showed that adolescents who consumed sugar-containing beverages and sugar-containing beverages (excluding 100% fruit juices) at age 13 years was not associated with changes in BMI in adulthood2626. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262..

Two studies assessed the association between DP and BF measured using BMI, finding different results. The first study investigated the adherence to habitual DP, snacks DP, meals DP and sweet products and cheese DP by female adolescents and found no relationship with BMI after ten years of follow-up1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.. The second study found that young males who adhered to a DP rich in starch food sources at the age of fifteen had a 30% (p < 0.05) lower chance of being obese five years later3030. Cutler GJ. Association between major patterns of dietary and weight status in adolescents. Br J Nutr 2011; 108(2):349-356.. There was no evidence of association between BMI and consumption of macronutrients (carbohydrate, protein and fat - % calories/day)1515. Magarey AM, Daniels LA, Boulton TJC, Cockington R. Does fat intake predict adiposity in healthy children and adolescents aged 2-15 y? A longitudinal analysis. Eur J Clin Nutr 2001; 55(6):471-481., intake of dietary salt1616. Libuda L, Kersting M, Alexy M. Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents. Public Health Nutr 2011; 15(3):433-441., energy intake2929. Fulton JE, Dai S, Lyn MS, Grunbaum JA, Shah AM. Physical Activity, Energy Intake, Sedentary Behavior and Adiposity inYounth. Am J Prev Med 2009; 37(1 Supl.):S40-S49. and the habit of consuming milk, dairy products and calcium1010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113.,2222. Berkey CS, Rockett HR, Field AE, Gillman MW, Frazier AL, Camargo Junior CA, Colditz GA. Activity, dietary intake, and weight changes in a longitudinal study of preadolescent and adolescent boys and girls. Pediatrics 2000; 105(4):E56.,2323. Bigornia SJ, LaValley MP, Moore LL, Northstone K, Emmett P, Ness AR, Newby PK. Dairy Intakes at Age 10 Years Do Not Adversely Affect Risk of Excess Adiposity at 13 Years. J Nutr 2014; 144(7):1081-1090..

Body fat (BF). The intake of fast food at 13 years of age was associated with higher % BF (95% CI, 1.33 to 2.79) at age fifteen1111. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.. Gopinath et al.2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890. found, in Australian girls aged 12 years, that the consumption of soft drinks consumption once a day or more increased % BF by 4.5% at age 17 years, in comparison with those who never/rarely consumed soft drinks. In contrast, the regular intake of cereals during early adolescence reduced %BF at the end of this period by 0.04 (p = 0.01) percentage points1212. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780.. Similarly, Cheng et al.1313. Cheng S, Völgyi E, Tylavsky FA, Lyytikäinen A, Törmäkangas T. Trait-specific tracking and determinants of body composition: a 7-year follow-up study of pubertal growth in girls. BMC Medicine 2009; 7:5. tested the longitudinal association between a diet index based on the intake of several nutrients (protein, calcium, potassium, phosphorus and magnesium) and %BF. The authors found that a higher score for the diet index between ten and thirteen years of age predicted lower %BF (12% of variability) seven years later. The index measured at the beginning of adolescence explained 25% of variability of %BF at early adulthood.

Others studies found no association between the intake of sugar-sweetened beverage, diet soft drink, fast food, dairy products, calcium intake, energy consumption and %BF measured through bioelectrical impedance1010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113.,1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.,2929. Fulton JE, Dai S, Lyn MS, Grunbaum JA, Shah AM. Physical Activity, Energy Intake, Sedentary Behavior and Adiposity inYounth. Am J Prev Med 2009; 37(1 Supl.):S40-S49.. The studies assessing the associations of %BF (measured with DEXA) with the intake of milk, dairy products and sugar-sweetened beverage also did not find evidence of association1919. Lin SS, Tarrant M, Hui LL, Kwok MK, Lam TH. The Role of Dairy Products and Milk in Adolescent Obesity: Evidence from Hong Kong’s ‘‘Children of 1997’’ Birth Cohort. PLoS One 2012; 7(12):e52575.,2121. Noel SE, Ness AR, Northstone K, Emmett P, Newby PK. Milk Intakes Are Not Associated with Percent Body Fat in Children from Ages 10 to 13 Years. J Nutr 2011; 141(11):2035-2041.,2424. Mundt CA, Baxter-Jones ADG, Whiting SJ, Bailey DA, Faulkner RA, Mirwald RL. Relationships of Activity and Sugar Drink Intake on Fat Mass Development in Youths. Med Sci Sports Exerc 2006; 38(7):1245-1254.. There was also no significant relationship between dietary salt intake (g/day and excretion sodium) and DP (habits, meals and sweets and cheese) with %BF estimated by subscapular and tricipital skinfold thickness1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.,1616. Libuda L, Kersting M, Alexy M. Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents. Public Health Nutr 2011; 15(3):433-441..

Fat Mass Index (FMI) and Adiposity Index (AI). An association has been observed between DP z-score based on high intake of energy and fat, as well as low intake of fiber, between ten and thirteen years of age and AI Z-score at fifteen years of age. For each 1 SD increase in DP z-score, the odds of presenting excess adiposity in this period increased by 0.13 times (95% CI, 0.01 to 0.27)2020. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305.. Assmann et al.2727. Assmann KE, Joslowski G, Buyken AE, Cheng G, Remer T, Kroke A, Günther AL. Prospective Association of Protein Intake During Puberty with Body Composition in Young Adulthood. Obesity 2013; 21(12):E782-789. evaluated the habitual animal and vegetable protein consumption between nine and fifteen years and FMI in adulthood. The researchers found a positive association to animal protein consumption and FMI, but only in men.

Skinfolds. The consumption of macronutrients (%calories/day – carbohydrate, protein and fat) at ages 11 and 13 years did not predict subcutaneous BF measured using skinfold thickness (in millimeters) at age 15 years1515. Magarey AM, Daniels LA, Boulton TJC, Cockington R. Does fat intake predict adiposity in healthy children and adolescents aged 2-15 y? A longitudinal analysis. Eur J Clin Nutr 2001; 55(6):471-481..

Statistical analyses

The selected studies applied statistical tests derived from multiple linear regressions and generalized linear models. The main variables used for adjustment were: age1313. Cheng S, Völgyi E, Tylavsky FA, Lyytikäinen A, Törmäkangas T. Trait-specific tracking and determinants of body composition: a 7-year follow-up study of pubertal growth in girls. BMC Medicine 2009; 7:5.,1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.,1616. Libuda L, Kersting M, Alexy M. Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents. Public Health Nutr 2011; 15(3):433-441.

17. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.
-1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.,2020. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305.,2121. Noel SE, Ness AR, Northstone K, Emmett P, Newby PK. Milk Intakes Are Not Associated with Percent Body Fat in Children from Ages 10 to 13 Years. J Nutr 2011; 141(11):2035-2041.,2323. Bigornia SJ, LaValley MP, Moore LL, Northstone K, Emmett P, Ness AR, Newby PK. Dairy Intakes at Age 10 Years Do Not Adversely Affect Risk of Excess Adiposity at 13 Years. J Nutr 2014; 144(7):1081-1090.,2525. Feeley AB, Musenge E, Pettifor JM, Norris SA. Investigation into longitudinal dietary behaviours and household socio-economic indicators and their association with BMI Z-score and fat mass in South African adolescents: the Birth to Twenty (Bt20) cohort. Public Health Nutr 2012; 16(4):693-703.,2626. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262.,2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890.,2929. Fulton JE, Dai S, Lyn MS, Grunbaum JA, Shah AM. Physical Activity, Energy Intake, Sedentary Behavior and Adiposity inYounth. Am J Prev Med 2009; 37(1 Supl.):S40-S49., physical activity1010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113.

11. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.
-1212. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780.,1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.

19. Lin SS, Tarrant M, Hui LL, Kwok MK, Lam TH. The Role of Dairy Products and Milk in Adolescent Obesity: Evidence from Hong Kong’s ‘‘Children of 1997’’ Birth Cohort. PLoS One 2012; 7(12):e52575.

20. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305.
-2121. Noel SE, Ness AR, Northstone K, Emmett P, Newby PK. Milk Intakes Are Not Associated with Percent Body Fat in Children from Ages 10 to 13 Years. J Nutr 2011; 141(11):2035-2041.,2323. Bigornia SJ, LaValley MP, Moore LL, Northstone K, Emmett P, Ness AR, Newby PK. Dairy Intakes at Age 10 Years Do Not Adversely Affect Risk of Excess Adiposity at 13 Years. J Nutr 2014; 144(7):1081-1090.,2626. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262.,2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890.,3030. Cutler GJ. Association between major patterns of dietary and weight status in adolescents. Br J Nutr 2011; 108(2):349-356., maternal education1212. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780.

13. Cheng S, Völgyi E, Tylavsky FA, Lyytikäinen A, Törmäkangas T. Trait-specific tracking and determinants of body composition: a 7-year follow-up study of pubertal growth in girls. BMC Medicine 2009; 7:5.
-1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.,1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.

19. Lin SS, Tarrant M, Hui LL, Kwok MK, Lam TH. The Role of Dairy Products and Milk in Adolescent Obesity: Evidence from Hong Kong’s ‘‘Children of 1997’’ Birth Cohort. PLoS One 2012; 7(12):e52575.

20. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305.
-2121. Noel SE, Ness AR, Northstone K, Emmett P, Newby PK. Milk Intakes Are Not Associated with Percent Body Fat in Children from Ages 10 to 13 Years. J Nutr 2011; 141(11):2035-2041.,2323. Bigornia SJ, LaValley MP, Moore LL, Northstone K, Emmett P, Ness AR, Newby PK. Dairy Intakes at Age 10 Years Do Not Adversely Affect Risk of Excess Adiposity at 13 Years. J Nutr 2014; 144(7):1081-1090.,2727. Assmann KE, Joslowski G, Buyken AE, Cheng G, Remer T, Kroke A, Günther AL. Prospective Association of Protein Intake During Puberty with Body Composition in Young Adulthood. Obesity 2013; 21(12):E782-789.,2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890., BF (BMI, FM, FMI, adiposity or weight) at baseline1414. Ritchie LD, Spector P, Stevens MJ, Schmidt MM, Schreiber GB, Striegel-Moore RH, Wang MC, Crawford PB. Dietary patterns in adolescence are related to adiposity in young adulthood in black and white females. J Nutr 2007; 137(2):399-406.,1919. Lin SS, Tarrant M, Hui LL, Kwok MK, Lam TH. The Role of Dairy Products and Milk in Adolescent Obesity: Evidence from Hong Kong’s ‘‘Children of 1997’’ Birth Cohort. PLoS One 2012; 7(12):e52575.,2121. Noel SE, Ness AR, Northstone K, Emmett P, Newby PK. Milk Intakes Are Not Associated with Percent Body Fat in Children from Ages 10 to 13 Years. J Nutr 2011; 141(11):2035-2041.,2323. Bigornia SJ, LaValley MP, Moore LL, Northstone K, Emmett P, Ness AR, Newby PK. Dairy Intakes at Age 10 Years Do Not Adversely Affect Risk of Excess Adiposity at 13 Years. J Nutr 2014; 144(7):1081-1090.,2626. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262.,2727. Assmann KE, Joslowski G, Buyken AE, Cheng G, Remer T, Kroke A, Günther AL. Prospective Association of Protein Intake During Puberty with Body Composition in Young Adulthood. Obesity 2013; 21(12):E782-789.,3030. Cutler GJ. Association between major patterns of dietary and weight status in adolescents. Br J Nutr 2011; 108(2):349-356. and energy intake1010. Phillips SM, Bandini LG, Cyr H, Colclough-Douglas S, Naumova E, Must A. Dairy food consumption and body weight and fatness studied longitudinally over the adolescent period Body Fat in Children from Ages 10 to 13 Years. Int J Obes Relat Metab Disord 2003; 27(9):1106-1113.,1515. Magarey AM, Daniels LA, Boulton TJC, Cockington R. Does fat intake predict adiposity in healthy children and adolescents aged 2-15 y? A longitudinal analysis. Eur J Clin Nutr 2001; 55(6):471-481.

16. Libuda L, Kersting M, Alexy M. Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents. Public Health Nutr 2011; 15(3):433-441.

17. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.
-1818. Laska MN, Murray DM, Lytle LA, Harnack LJ. Longitudinal associations between key dietary behaviors and weight gain over time: Transitions through the adolescent years. Obesity (Silver Spring) 2012; 20(1):118-125.,2222. Berkey CS, Rockett HR, Field AE, Gillman MW, Frazier AL, Camargo Junior CA, Colditz GA. Activity, dietary intake, and weight changes in a longitudinal study of preadolescent and adolescent boys and girls. Pediatrics 2000; 105(4):E56.,2424. Mundt CA, Baxter-Jones ADG, Whiting SJ, Bailey DA, Faulkner RA, Mirwald RL. Relationships of Activity and Sugar Drink Intake on Fat Mass Development in Youths. Med Sci Sports Exerc 2006; 38(7):1245-1254.,2626. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262.

27. Assmann KE, Joslowski G, Buyken AE, Cheng G, Remer T, Kroke A, Günther AL. Prospective Association of Protein Intake During Puberty with Body Composition in Young Adulthood. Obesity 2013; 21(12):E782-789.
-2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890..

Discussion

This systematic review compiled 21 studies that investigated the longitudinal relationship between diet and BF in adolescence and early adulthood. Ten out of the 21 articles selected showed an association between some aspect of diet and estimative of the quantity of body fat1111. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.

12. Albertson AM, Thompson D, Franko DL, Norton M. Prospective Associations among Cereal Intake in Childhood and Adiposity, Lipid Levels, and Physical Activity during Late Adolescence. J Am Diet Assoc 2009; 109(10):1775-1780.
-1313. Cheng S, Völgyi E, Tylavsky FA, Lyytikäinen A, Törmäkangas T. Trait-specific tracking and determinants of body composition: a 7-year follow-up study of pubertal growth in girls. BMC Medicine 2009; 7:5.,1717. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.,2020. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305.,2525. Feeley AB, Musenge E, Pettifor JM, Norris SA. Investigation into longitudinal dietary behaviours and household socio-economic indicators and their association with BMI Z-score and fat mass in South African adolescents: the Birth to Twenty (Bt20) cohort. Public Health Nutr 2012; 16(4):693-703.

26. Stoof SP, Twisk JW, Olthof MR. Is the intake of sugar-containing beverages during adolescence related to adult weight status? Public Health Nutr 2011; 16(7):1257-1262.

27. Assmann KE, Joslowski G, Buyken AE, Cheng G, Remer T, Kroke A, Günther AL. Prospective Association of Protein Intake During Puberty with Body Composition in Young Adulthood. Obesity 2013; 21(12):E782-789.
-2828. Gopinath B, Flood VM, Rochtchina E, Baur LA, Chun Yu Louie J, Smith W, Mitchell P. Carbohydrate Nutrition and Development of Adiposity During Adolescence. Obesity 2013; 21(9):1884-1890.,3030. Cutler GJ. Association between major patterns of dietary and weight status in adolescents. Br J Nutr 2011; 108(2):349-356. , measured by different methods. It was observed that diet, measured using a dietary index at the beginning of adolescence, explains 25% of variability of body fat at the beginning of adult life1313. Cheng S, Völgyi E, Tylavsky FA, Lyytikäinen A, Törmäkangas T. Trait-specific tracking and determinants of body composition: a 7-year follow-up study of pubertal growth in girls. BMC Medicine 2009; 7:5.. It has been shown that the diet has effects on body energy balance and efficiency of body fat deposition due to the influence on satiety, hunger, food acceptance and metabolism2323. Bigornia SJ, LaValley MP, Moore LL, Northstone K, Emmett P, Ness AR, Newby PK. Dairy Intakes at Age 10 Years Do Not Adversely Affect Risk of Excess Adiposity at 13 Years. J Nutr 2014; 144(7):1081-1090.. An association between high intake of fat energy and low intake of dietary fibers with higher levels of adiposity in adolescence was also found in the present review2020. Ambrosini GL, Emmett PM, Northstone K, Howe LD, Tilling K, Jebb SA. Identification of a dietary pattern prospectively associated with increased adiposity during childhood and adolescence. Int J Obes 2012; 36(10):1299-1305.. The following characteristics have been considered as main risk factors for obesity: sedentary lifestyle; high intake of energy-dense, micronutrient-poor foods; heavy marketing of energy-dense foods and fast food outlets; sugar-sweetened soft drinks and fruit juices; adverse social and economic conditions in developed countries, especially among women2525. Feeley AB, Musenge E, Pettifor JM, Norris SA. Investigation into longitudinal dietary behaviours and household socio-economic indicators and their association with BMI Z-score and fat mass in South African adolescents: the Birth to Twenty (Bt20) cohort. Public Health Nutr 2012; 16(4):693-703.. During adolescence, eating behaviors are influenced by several aspects such as eating away from home, food advertising and promotion, time limitations for eating and meal preparation, family, friends, university, work, etc. In addition, the food industry has responded to this social demand by increasing convenience foods and ready-prepared meals rich in fat, sugar, salt and conservatives. Consumption of high calorie foods, associated with a lack of physical activity, contributes to an increase in body fat over time. In this vein, the present systematic review also identified that the habit of consuming fast food increased the chance of young people becoming obese by 23%1111. Fraser LK, Clarke GP, Cade JE, Edwards KL. Fast food and obesity: a spatial analysis in a large United Kingdom population of children aged 13-15. Am J Prev Med 2012; 42(5):e77-85.. It has also been pointed out that the intake of sugary beverages and regular soda during adolescence contributes toward an increase in BMI among females in early adult life1717. Libuda L, Alexy U, SichertHellert SW, Stehle P, Danckert NK, Buyken AE, Kersting M. Pattern of beverage consumption and longterm association with body weight status in German adolescents – results from the DONALD study. Br J Nutr 2008; 99(6):1370-1379.. In females, the high percentage of fat in adolescence and early adulthood also influences reproductive ability through hormonal mechanisms2323. Bigornia SJ, LaValley MP, Moore LL, Northstone K, Emmett P, Ness AR, Newby PK. Dairy Intakes at Age 10 Years Do Not Adversely Affect Risk of Excess Adiposity at 13 Years. J Nutr 2014; 144(7):1081-1090..

Conversely, although the studies mentioned above found significant associations between diet and body fat, another study found no significant relationship between the intake of some of these foods (sugar-sweetened beverages, regular soft drink and fast food) and body fat. The inconsistency of these results can be attributed to the inherent variability in the methods used for assessing the diet and body fat, together with the variability in the methodological errors of the studies and the use of inaccurate and imprecise techniques.

In the studies selected for the present review, body fat was estimated through several approaches, such as BMI, % body fat (equations derived from skinfold thickness, DEXA and bioelectrical impedance), adiposity index and measurement of subcutaneous fat (subscapular and tricipital skinfold thickness). This lack of standardization in the methods, besides hampering comparisons, also reduces the accuracy of information presented in the studies3131. Lee SY, Gallagher D. Assessment methods in human body composition. Current opinion in clinical nutrition and metabolic care. Curr Opin Clin Nutr Metab Care 2008; 11(5):566-572.. Most of studies used BMI as the outcome variable. The frequent use of BMI to evaluate adiposity is questionable, because it is a method based only on body weight and does not distinguish lean mass from fat mass. Thus, the method can wrongly classify an individual as thin, when, in fact, they have a large quantity of body fat, or conversely, it can indicate a more common situation: define an individual with a considerable quantity of lean body mass as overweight/obese3131. Lee SY, Gallagher D. Assessment methods in human body composition. Current opinion in clinical nutrition and metabolic care. Curr Opin Clin Nutr Metab Care 2008; 11(5):566-572.,3232. Beechy L, Galpern J, Petrone A. Assessment tools in obesity - Psychological measures, diet, activity, and body composition. Physiol Behav 2012; 107(1):154-171.. BMI is a proxy of obesity and using it for assessing body composition (e.g. percentage body fat), or body fat distribution (e.g. waist circumference or waist-hip ratio) may result in misclassification. The same was observed for the exposure (diet), where most of the reviewed studies investigated specific aspects of food intake, focusing on energy or macronutrient intake, as well as cereals, milk and dairy products, fast food, etc. This kind of investigation precludes the evaluation of the existence of possible interaction effects between food and body composition. It was observed that, along with the different methodologies adopted in the studies, the use of diet assessment tools able to provide a more complex analysis of food intake was not properly explored.

Besides the disparity in methods for assessing exposure and outcome variables, additional factors that can be related to lack of consistency of findings among the studies are: a) diversity of adjustment variables used by researchers in statistics analyses, which can interfere directly in the significance of the associations; b) the broad age variation of participants, which can interfere in the way of measuring exposure and outcome as well as in the magnitude of errors of information and measurement. The duration of follow up is another important aspect. Short periods do not allow exposure to establish its effect upon the outcome, whereas long periods can allow the effect to be influenced by other factors or even lose magnitude for not corresponding to the period of life in which the exposure would have been meaningful3333. Collins CE, Watson J, Burrows T. Measuring dietary intake in children and adolescents in the context of overweight and obesity. Int J Obes (Lond) 2010; 34(7):1103-1115.,3434. Harman SM, Blackman MR. The effects of growth hormone and sex steroid on lean body mass, fat mass, muscle strength, cardiovascular endurance and adverse events in healthy elderly women and men. Hormone research 2003; 60(Supl. 1):121-124..

Further studies should include broad evaluation of the diet, taking into account the interaction of food in the human body and the effect of this on body composition. The tools used to measure dietary aspects should investigate food habits for a considerable period of time. Accurate methods capable of specifying the content of this body component should be used to evaluate body fat, thereby avoiding classification errors3131. Lee SY, Gallagher D. Assessment methods in human body composition. Current opinion in clinical nutrition and metabolic care. Curr Opin Clin Nutr Metab Care 2008; 11(5):566-572.,3232. Beechy L, Galpern J, Petrone A. Assessment tools in obesity - Psychological measures, diet, activity, and body composition. Physiol Behav 2012; 107(1):154-171..

Conclusions

This review draws attention to the methods used for assessing diet and BF, as the existent heterogeneity hampers the reliability of the studies, as well as the comparability between them. We found insufficient evidence on the link between diet and BF in adolescence and early adulthood. However, the findings of this revision suggest that the consumption of unhealthy food or food groups (higher energy density and lower amount of nutrients) appears to be associated with higher quantity of BF in adolescence and early adulthood. We highlight the need for longitudinal studies assessing BF through more precise methods.

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Publication Dates

  • Publication in this collection
    May 2017

History

  • Received
    06 Aug 2015
  • Reviewed
    19 Nov 2015
  • Accepted
    21 Nov 2015
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