The changes in Kieras body scared her parents. Though the 8-year-old seemed her usual chipper self, shed started to develop headaches and acne. More alarming to her mom, Sharon, were the budding breasts on Kieras thin little chest. I thought, shes too young, remembers the Pittsburgh mom. Shes still fearful about sleeping by herself. An 8-year-old just isnt mature enough to handle this. For Kiera, whose last name is being withheld to protect her privacy, it was all so embarrassing. None of her friends seemed to be experiencing what she was. When they asked about the acne and her expanding chest, Kiera was evasive. I didnt want to tell them what was going on, says the Pittsburgh girl, now age 9. So I had to kind of lie to them. When Kieras parents took their daughter to the doctor, he assured them that nothing was wrong with the girl. Kiera was simply starting puberty early. As it turns out, puberty at age 7 or 8 isnt so unusual these days. A new study, published Monday in the journal Pediatrics, shows that more American girls are maturing earlier and earlier. Typically, U.S. girls hit puberty around age 10 or 11. Precocious puberty strikes more 7-year-old girls - Health - Kids and parenting - msnbc.com is it the hormonal addictives placed in foods? what is happening to cause this...its not natural at all. .