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.

· · 来源：tutorial资讯

Trump has asked US oil firms to spend at least $100bn (£75bn) on restoring Venezuela's battered infrastructure – an absolute necessity before his plan to ramp up sales can be realised.

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