<human>:  Who was the first person to discover that calorie restriction extends lifespan?
<bot>: That would be a guy named Richard Weindruch. He was a scientist at the University of Wisconsin-Madison. He discovered that mice that were fed a diet of only 1/10 of their normal caloric intake lived longer than those that were fed a normal diet. This led him to believe that caloric restriction could be a viable way to extend the human lifespan.