Stephen Hawking, while a bona fide genius, is also the type of friend who regularly tells it like it is, even when you kind of wish he wouldn’t. Earlier this month, he predicted that we have about 1,000 years left on Earth, and now he’s telling us we’re perilously overweight—as if we weren’t keenly aware of that already.
In a video produced by Swedish nonprofit GEN-PEP, Hawking warns that, as a result of obesity millions of lives are in danger. “As a cosmologist, I see the world as a whole,” he says in his latest public service announcement, “and I am here to address one of the most serious public health problems of the 21st century.” For the 38 percent of Americans struggling with obesity, the fact that it’s a problem isn’t news.

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