Genes link puberty timing and body fat in women

Scientists have discovered 30 new genes that control the age of sexual maturation in women. Notably, many of these genes also act on body weight regulation or biological pathways related to fat metabolism. Puberty in women normally occurs between 11 -- 14 years of age. If a girl reaches a particular weight (around 100 lb (45 kg)), the onset of puberty is triggered. The heavier the child, the earlier puberty occurs, possibly affecting risk of later disease.

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