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Why We Get Sick: The New Science of Darwinian Medicine

Book by Randolph M. Nesse · 4 quotes · Evolution, History, Life

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Why We Get Sick: The New Science of Darwinian Medicine Quotes

“During most all of human evolution, it was adaptive to conserve energy by being lazy as circumstances permitted. Energy was a vitally needed resourse and could not be wasted. Today this take-it-easy adaptation may lead us to watch tennis on television when we would be better off playing it. This can only aggravate the effects of excess nutrition. The average office worker would be much more healthy if he or she spent the day digging clams or harvesting fruit in scattered tall trees.”

“Our dietary problems arise from a mismatch between the tastes evolved for Stone Age conditions and their likely effects today. Fat, sugar, and salt were in short supply through nearly all of our evolutionary history. Almost everyone, most of the time, would have been better off with more of these substances, and it was consistenly adaptive to want more and try to get it. Today most of us can afford to eat more fat, sugar, and salt than is biologically adaptive, more than would ever have been available to our ancestors of a few thousands years ago.”