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What was striking about Herman-Giddens' report was the onset of secondary sexual characteristics: breast buds and pubic hair. Significant numbers of white girls--some 15%--were showing outward signs of incipient sexual maturity by age 8, and about 5% as early as 7. For African Americans, the statistics were even more startling. Fifteen percent were developing breasts or pubic hair by age 7, and almost half...
...Pediatrics report answered many questions, but much about the subject remains a mystery. The study couldn't accurately gauge, for example, how much the average age of onset of breast development (as opposed to menstruation) has dropped or over what period. That's because a key piece of research that helped set the standard age at 11 was a small study in the 1960s of white girls raised in English orphanages. But Dr. John Dallas, a pediatric endocrinologist with the University of Texas Medical Branch in Galveston, points out that the British girls may have been poorly nourished--a factor...
Exactly why obesity and early development should be linked is not well understood. But Kaplowitz suspects early breast development may be encouraged by a protein called leptin. "We know that fat cells produce leptin," he says. "And leptin is necessary for the progression of puberty." Another clue, according to Duke's Freemark, is that overweight girls have more insulin circulating in their blood. Says Freemark: "Those higher levels of insulin appear to stimulate the production of sex hormones from the ovary and the adrenal gland...
Despite the promises, the technology for filtering simply isn't there. All of the currently available Internet filtering programs block perfectly legitimate information. Error rates have ranged as high as 60 percent as filters prohibit access to information on breast cancer or sexually transmitted diseases. The American Family Association, a conservative religious group, was once blocked as as promoting anti-gay hate speech, and the American Civil Liberties Union, CNN and Time magazine have all been blocked by various filters for discussing the issue of Internet pornography. Many programs have blocked the websites of their competitors. Sometimes the blocks seem...
PROBLEM PILL So much for free love. For women with a family history of breast cancer, birth-control pills that were made before 1975 may have raised the already heightened likelihood of developing the cancer. Advice: be extra vigilant about getting mammograms if you have close relatives with breast cancer--and if you were using the Pill back when the times they were a-changin...