Women's Health Q&A
Is the environment having an effect on puberty in girls?
Menarche, the first menstrual period, normally occurs between ages ten and sixteen, generally several years after the first signs of puberty appear. These include widening of the hips, breast development and body hair growth. By the time menarche takes place, most young women have nearly completed their growth spurt and are within a few centimetres of their adult height. Precocious -- or early -- puberty occurs in girls who show signs of sexual development before age eight.
A study published in the American journal Pediatrics in 1997 found that the initial signs of puberty (breast …
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