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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His thesis at the Navy Academy was in the unheard-of topic of liquid-fuel engines. After graduation, he hoped to specialise in this pioneering new technology.

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