TY - JOUR TI - Obesity and attenuated adiposity rebound in children with congenital hypothyroidism. Normalization of BMI values in adolescents AU - Livadas, S. AU - Magiakou, M-A. AU - Mengreli, C. AU - Girginoudis, P. and AU - Galani, C. AU - Smyrnaki, P. AU - Kanaka-Gantenbein, C. AU - Xekouki, P. AU - and Chrousos, G. P. AU - Dacou-Voutetakis, C. JO - Hormone and Metabolic Research PY - 2007 VL - 39 TODO - 7 SP - 524-528 PB - Georg Thieme Verlag KG SN - 0018-5043, 1439-4286 TODO - 10.1055/s-2007-984396 TODO - adiposity rebound; obesity; thyroid; congenital hypothyroidism; BMI nadir TODO - An earlier adiposity rebound, suggestive of adult obesity, has been reported in children with congenital hypothyroidism. We undertook this study to evaluate the effect of congenital hypothyroidism on: 1) the timing of adiposity rebound, 2) the long-term prognosis of BMI status, and 3) the factors potentially affecting adiposity in subjects with congenital hypothyroidism. We found that in children with congenital hypothyroidism the BMI values were higher during the first years of life compared to normal population, but subsequently normalized. After the initial rise of BMI, the decline (nadir) and subsequent rise (adiposity rebound), usually occurring in normal children at an age greater than 30 months, was less evident in our group of children with congenital hypothyroidism. The severity of hypothyroidism affected BMI values at 6 and 12, but not at 36 months of age. In conclusion, in children with congenital hypothyroidism, 1) the high BMI values in early childhood normalize in adolescence, and 2) the normally expected BMI fluctuations during the first years of life are attenuated. These findings constitute indirect evidence that thyroid function during fetal and neonatal life affects BMI status during the first years of life. ER -