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Jornal de Pediatria

Print version ISSN 0021-7557On-line version ISSN 1678-4782

Abstract

SILVA, Cristiane M. et al. Do infants with cow's milk protein allergy have inadequate levels of vitamin D?. J. Pediatr. (Rio J.) [online]. 2017, vol.93, n.6, pp.632-638. ISSN 0021-7557.  https://doi.org/10.1016/j.jped.2017.01.006.

Objective:

To verify whether infants with cow's milk protein allergy have inadequate vitamin D levels.

Methods:

This cross-sectional study included 120 children aged 2 years or younger, one group with cow's milk protein allergy and a control group. The children were recruited at the pediatric gastroenterology, allergology, and pediatric outpatient clinics of a university hospital in the Northeast of Brazil. A questionnaire was administered to the caregiver and blood samples were collected for vitamin D quantification. Vitamin D levels <30 ng/mL were considered inadequate. Vitamin D level was expressed as mean and standard deviation, and the frequency of the degrees of sufficiency and other variables, as proportions.

Results:

Infants with cow's milk protein allergy had lower mean vitamin D levels (30.93 vs.35.29 ng/mL; p = 0.041) and higher deficiency frequency (20.3% vs.8.2; p = 0.049) than the healthy controls. Exclusively or predominantly breastfed infants with cow's milk protein allergy had higher frequency of inadequate vitamin D levels (p = 0.002). Regardless of sun exposure time, the groups had similar frequencies of inadequate vitamin D levels (p = 0.972).

Conclusions:

Lower vitamin D levels were found in infants with CMPA, especially those who were exclusively or predominantly breastfed, making these infants a possible risk group for vitamin D deficiency.

Keywords : Milk allergy; Infant; Vitamin D; Breast feeding; Sunlight.

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