For all those who experience life as quiet desperation, there are many others who dream of slowing the aging process. The latest hope is SRT-1720, a drug that allows mice to survive obesity longer than they do without it. By reducing fat in the liver and increasing sensitivity to insulin, it's allowed obese mice to live 44 percent longer than those which don't get it. Nicholas Wade reports on science for the New York Times. He's also the author of The Faith Instinct.
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