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Common Pesticides Speed Up Puberty in Boys

ORLANDO, Florida — The first evidence that environmental exposure to commonly used pesticides — the pyrethroids — at levels that are actually present in humans is likely speeding up puberty in boys has been reported.

Jing Liu, PhD, of Zhejiang University, Hangzhou, China, and colleagues assessed pyrethroid metabolites in the urine of more than 400 Chinese boys aged 9 to 16 and demonstrated that those who had a 10% increase in such metabolites were 100% to 200% more likely to be in an advanced stage of puberty.

They also verified the mechanisms that might be causing this with additional experiments in mice.


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