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Celebrate Youth Forever: Remain Young With the Low-Calorie Diet
Calorie restriction has long been shown to slow the aging process in rats and mice.
While scientists do not know how calorie restriction affects the aging process in rodents, one popular hypothesis is that it slows aging by decreasing a thyroid hormone, triiodothyronine (T3), which then slows metabolism and tissue aging.
Now, according to the new study, which is published in the June 2008 issue of Rejuvenation Research, calorie restriction - cutting approximately 300 to 500 calories per day - has a similar biological effect in humans and, therefore, may slow the aging process.
"Over recent years, there has been a huge amount of debate about whether calorie restriction slows the aging process in humans," said Edward Weiss, Ph.D., associate professor of nutrition and dietetics at Saint Louis University's Doisy College of Health Sciences and lead author of the study.
"Our research provides evidence that calorie restriction does work in humans like it has been shown to work in animals. The next step is to determine if this in fact slows age-related tissue deterioration. The only way to be certain, though, is to do a long-term study," he added.
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