“The only way to keep your health is to eat what you don’t want, drink what you don’t like, and do what you’d rather not.” – Mark Twain
Twain may have been correct about health, but longevity may be another matter altogether. Eat, drink, and be merry… if you want to die: that is what the evidence has shown for the last 75 years, right? In a way, perhaps it was too good to be true: go on a diet and live happily ever after… forever. Well, not forever, but, yes, for significantly longer. It still seems to be a robust finding in mice and rats, where lifetimes are short and easily measured in the lifetime of a single grant funding cycle. But a recent careful, well-controlled, and decade-spanning study from a group at the National Institute on Aging has shown that, whereas monkeys that are put on a restricted diet long-term may be healthier than monkeys that are fed 50% more, they don’t live longer. But you have to admit, the monkeys do look spritely.
Nature 489, 318–321 (13 September 2012) doi:10.1038/nature11432
The views expressed are those of the author(s) and are not necessarily those of Scientific American.
ABOUT THE AUTHOR(S)
Stephen L. Macknik
Stephen L. Macknik is a professor of opthalmology, neurology, and physiology and pharmacology at SUNY Downstate Medical Center in Brooklyn, N.Y. Along with Susana Martinez-Conde and Sandra Blakeslee, he is author of the Prisma Prize-winning Sleights of Mind. Their forthcoming book, Champions of Illusion, will be published by Scientific American/Farrar, Straus and Giroux.