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  • Title: Pubertal development in obese children and adolescents.
    Author: Denzer C, Weibel A, Muche R, Karges B, Sorgo W, Wabitsch M.
    Journal: Int J Obes (Lond); 2007 Oct; 31(10):1509-19. PubMed ID: 17653066.
    Abstract:
    OBJECTIVE: To investigate clinical and laboratory markers of pubertal development in a large sample of obese children and adolescents. METHODS: Analysis of parameters of sexual maturation in 1232 obese individuals (582 boys) aged 6-18 years (mean 13.0+/-2.42 years). Clinical evaluation of pubertal stage and determination of bone age in a subset (227 patients). RESULTS: Mean Height--standard deviation scores (height-SDS) was positive during childhood and reached zero approximately at age 14 years followed by a turn to negative mean height-SDS in both genders. Accordingly, bone age was accelerated until age 14. No significant differences in average time points of occurrence of pubic hair stages PH 2 to PH 4 in boys and PH 2 to PH 5 in girls were observed as compared to references of the First Zurich Longitudinal Study. In girls, breast stage B 3 was reached earlier (11.6 vs 12.2 years, P=0.03). In boys, mean volume of testis revealed no significant deviation from reference. Mean dehydroepiandrosterone sulfate (DHEAS) levels were elevated in boys (within age ranges 8-10 years and 12-16 years, P<0.02) and in girls (within age ranges 6-8 years and 12-18 years, P<0.005) and mean testosterone levels in boys >12 years were lower as compared to reference ranges (all P-values <0.0001). CONCLUSION: The study data suggest normal development of pubarche and gonadarche in obese German boys and normal timing of pubarche in girls. Breast development in obese girls seems to be slightly advanced. In obese boys, an obvious dissociation of clinical and laboratory parameters of pubertal development was observed. Despite significantly increased height-SDS and increased DHEAS levels, gonadal development was normal and testosterone levels were decreased. Elevated DHEAS levels in both genders may contribute to the acceleration of bone maturation, a lower final body height and could increase cardiovascular risk.
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