- PHILLIPS: Where is the conservative establishment?
- 7.5-magnitude earthquake shakes southern Mexico
- ISTOOK: IRS “wants to throw us in jail,” says tea party leader
- Easter woes: Chocolate costs soar, becoming ‘unaffordable’ luxury
- Michaels craft chain confirms hackers hit 3M customers
- Special Forces’ suicide rates hit record levels — casualties of ‘hard combat’
- Many Americans would quickly face financial hardship after losing job, poll shows
- Toronto Mayor Rob Ford thanks supporters at re-election campaign bash
- Texas seizes polygamist Warren Jeffs’ 1,600-acre ranch
- Publisher unveils Hillary Clinton’s new memoir — ‘Hard Choices’
Earlier puberty seen in boys, just like in girls
CHICAGO (AP) - When it comes to the birds and the bees, some parents may want to have that talk with their boys a little sooner than they expected.
Researchers have found signs of puberty in American boys up to two years earlier than previously reported _ age 9 on average for blacks, 10 for whites and Hispanics. Other studies have suggested that girls, too, are entering puberty younger.
Why is this happening? Theories range from higher levels of obesity and inactivity to chemicals in food and water, all of which might interfere with normal hormone production. But those are just theories, and they remain unproven.
Doctors say earlier puberty is not necessarily cause for concern. And some experts question whether the trend is even real.
Dr. William Adelman, an adolescent medicine specialist in the Baltimore area, says the new research is the first to find early, strong physical evidence that boys are maturing earlier. But he added that the study still isn’t proof and said it raises a lot of questions.
Earlier research based on 20-year-old national data also suggested a trend toward early puberty in boys, but it was based on less rigorous information. The new study involved testes measurements in more than 4,000 boys. Enlargement of testes is generally the earliest sign of puberty in boys.
The study was published online Saturday in Pediatrics to coincide with the American Academy of Pediatrics‘ national conference in New Orleans.
Dr. Neerav Desai, an adolescent medicine specialist at Vanderbilt University in Nashville, said he’s seen a subtle trend toward slightly earlier puberty in boys. He said it’s important for parents and doctors to be aware so they can help children emotionally prepare for the changes that come with puberty.
Doctors generally consider puberty early if it begins before age 8 in girls and before age 9 in boys.
Boys are more likely than girls to have an underlying physical cause for early puberty. But it’s likely that most, if not all, of the boys in the study were free of any conditions that might explain the results, said lead author Marcia Herman-Giddens, a researcher at the University of North Carolina in Chapel Hill.
Problems such as thyroid abnormalities and brain tumors have been linked to early puberty. But boys with chronic medical conditions or who were using medicines that could affect puberty were excluded from the research.
In girls, early puberty has been linked with increased chances for developing breast cancer, but whether it poses health risks for boys is uncertain. Some scientists think early testes development may increase the risk for testicular cancer, but a recent research analysis found no such link.
“If it’s true that boys are starting puberty younger, it’s not clear that means anything negative or has any implications for long-term,” said Adelman, a member of the American Academy of Pediatrics‘ committee on adolescence.
For the new study, researchers recruited pediatricians in 41 states who participate in the academy’s office-based research network. Doctors asked parents and boys aged 6 to 16 to take part during regular checkups. The visits took place between 2005 and 2010.
Half of the boys were white. The rest were almost evenly divided among blacks and Hispanics.
TWT Video Picks
- Harry Reid blasts Bundy ranch supporters as 'domestic terrorists'
- Immigration still on hold: Boehner's office
- Inside China: Marine's comment on islands draws sharp Chinese response
- Supreme Court weighs appeal to concealed-carry gun laws
- Prosecutors seek arrest warrant for ferry captain in South Korea
- PRUDEN: When a bored president just 'mails it in'
- With pot and e-cigarettes, Big Tobacco is just waiting to inhale emerging markets
- Army goes to war with National Guard, seizes Apache attack helicopters
- CBO shows it's Paul Ryan 4, Obama 0 on budget targeting
- CARSON: Recovering Tocqueville's vision of American exceptionalism
Top 10 handguns in the U.S.