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A comment on US girls getting first periods earlier over the last 50 years, study finds. Parent comment

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Re:US girls getting first periods earlier over the last 50 y... by csomar on Thursday May 30, 2024 @03:42AM (#40521166)
South East Asia seems to be fine and healthier. Is that an enough of an example? But then maybe soy has nothing to do in any of this...
[ Parent | on HN ]
Re:US girls getting first periods earlier over the last 50 y... by 4gotunameagain on Thursday May 30, 2024 @02:38AM (#40520801)
Unfortunately it seems to be multiple confounding factors including diet, pollution, lifestyle.. And pollution is the hairy one. From the immense amount of microplastic on clothing or food, to multiple relatively unstudied sources with unknown effects like tire or brake pad powder (non exhaust car emissions)
[ Parent | on HN ]
Re:US girls getting first periods earlier over the last 50 y... by rightbyte on Thursday May 30, 2024 @04:54AM (#40521546)
> brake pad powder

Are there other concerns than asbestos like particles from those?

[ Parent | on HN ]