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Age of pubertal onset declining among girls
2/11/2020

Girls' age of breast development, indicating pubertal onset, dropped by three months per decade on average from 1977 to 2013, according to a study in JAMA Pediatrics. Earlier female pubertal onset may be attributed to increasing body mass index and elevated environmental exposures to endocrine-disrupting chemicals, said researcher Dr. Alexander Busch.

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