Highlights
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Insufficient vitamin D levels and sufficient vitamin D levels had a lower risk of ICPP.
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The vitamin D levels in ICPP girls could affect by height, weight, breast stage, mother's height, and luteinizing hormone/follicle-stimulating hormone ratio.
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The results could affect by the imbalance of girls in vitamin D deficiency, insufficiency, and sufficiency groups.
Abstract
Introduction
Prior studies have found inconsistent results regarding the relationship between vitamin D status and Idiopathic Central Precocious Puberty (ICPP).
Objective
To assess the role of serum 25-hydroxyvitamin D (25 [OH]D) levels in ICPP development.
Method
The authors retrospectively collected data from 221 girls with ICPP and 144 healthy girls between January 2017 and December 2019. The participants’ serum 25(OH)D levels were measured using an automatic chemiluminescence method, and the association between serum 25(OH)D levels and the risk of ICPP was assessed using multivariate logistic regression analysis. Odds Ratios (OR) with 95% Confidence Intervals (95% CI) were calculated as effect estimates.
Results
Serum 25(OH)D levels in the ICPP group were significantly lower than those in healthy controls (p < 0.001). Multivariate analysis indicated that girls with insufficient vitamin D levels (OR = 0.201; 95% CI 0.094-0.428; p < 0.001) and sufficient vitamin D levels (OR = 0.141; 95% CI 0.053-0.375; p < 0.001) both had a lower risk of ICPP than girls with vitamin D deficiency. Moreover, the authors found that the height (p = 0.014), weight (p = 0.014), breast stage (p = 0.010), mother's height (p < 0.001), and luteinizing hormone/follicle-stimulating hormone ratio (p = 0.010) in girls with ICPP could be associated with levels of vitamin D.
Conclusion
This study found that a low serum 25(OH)D level is an independent risk factor for ICPP, and several characteristics of girls with ICPP could be affected by their vitamin D status.
Keywords
Idiopathic central precocious puberty; Serum 25-hydroxyvitamin D; Girls; Risk factors