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While most are stunned by the news that a 9-year-old girl who had been raped gave birth in Mexico, doctors have known for years that the average age of puberty is declining. A landmark 1997 study in the journal Pediatrics prompted a redefinition of early onset puberty, from 8 to 7 among Caucasian girls and 7 to 6 among African-American girls for early breast development.
Possible environmental factors include obesity, diet, and exposure to a variety of synthetic chemicals.
Originally posted by Wifibrains
ETA, I've read certain plastics in bottles and food containers can cause this, also fluoride. But this is a conspiracey site........
Early puberty in girls has been found to be associated with a higher risk for breast cancer. Height, weight, diet, exercise, and family history have all been found to influence age of puberty (see BCERF Fact Sheet #08, Childhood Life Events and the Risk of Breast Cancer). Steroid hormones in food were suspected to cause early puberty in girls in some reports. However, exposure to higher than natural levels of steroid hormones through hormone-treated meat or poultry has never been documented. Large epidemiological studies have not been done to see whether or not early puberty in developing girls is associated with having eaten growth hormone-treated foods.
A concern about an increase in cases of girls reaching puberty or menarche early (at age eight or younger) in Puerto Rico, led to an investigation in the early 1980s by the Centers for Disease Control (CDC). Samples of meat and chicken from Puerto Rico were tested for steroid hormone residues. One laboratory found a chicken sample from a local market to have higher than normal level of estrogen. Also, residues of zeranol were reported in the blood of some of the girls who had reached puberty early. However, these results could not be verified by other laboratories. Following CDC's investigation, USDA tested 150 to 200 beef, poultry and milk samples from Puerto Rico in 1985, and found no residues of DES, zeranol or estrogen in these samples.
In another study in Italy, steroid hormone residues in beef and poultry in school meals were suspected as the cause of breast enlargement in very young girls and boys. However, the suspect beef and poultry samples were not available to test for the presence of hormones. Without proof that exposure to higher levels of steroid hormones occurred through food, it is not possible to conclude or not eating hormone-treated meat or poultry caused the breast enlargement in these cases.
reply to post by SpaDe_
I also remember reading about a blind study that was done where one group of girls was given free range meat, and organic vegetables, while another was given hormone treated meat and non organic vegetables. If I remember right the one thing that was obvious at the end of the study was the noticeable difference in breast size between the two groups. I will see if I can find that study and post it.
One of the common culprits is estrogen, much of which is inadvertently released into sewers through the urine of women taking birth control. Studies have shown that estrogen can wreak reproductive havoc on some fish, which spawn infertile offspring sporting a mixture of male and female parts. Researchers at the University of Pittsburgh found that human breast cancer cells grew twice as fast when exposed to estrogen taken from catfish caught near untreated sewage overflows. “There is the potential for an increased risk for those people who are prone to estrogenic cancer,” said Conrad Volz, lead researcher on the study.