By the 1970s, something had fundamentally altered our ability to find enough. “If you look at the pattern of obesity, we’ve been getting fatter for the better part of a hundred years,” said Stephan Guyenet, an obesity researcher and neuroscientist and author of The Hungry Brain. “But obesity accelerated in the ’70s, ’80s, ’90s, and through today. What caused us to start eating more? I think there are various explanations, but it clearly has something to do with our food.”
