A new study shows that exposure to two specific 'forever chemicals' may accelerate biological aging, especially in middle-aged men. Researchers revealed a link between faster epigenetic aging, and two of these alternatives, PFNA and PFOSA, a precursor of PFOA.

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// 易错点2:用Math.ceil/Math.floor取整 → 破坏时间比较逻辑,必须精确计算

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