Rhesus monkey Canto, 27, and on a restricted diet, is pictured at the Wisconsin National Primate Research Center at the University of Wisconsin-Madison on May 28, 2009. The
animal is among the oldest surviving subjects in a pioneering long-term study of the links between diet and aging in Rhesus macaque monkeys, which have an average life span of
about 27 years in captivity. Lead researcher Richard Weindruch, a professor of medicine in the UW School of Medicine and Public Health, and co-author Ricki Colman, associate
scientist at the Wisconsin National Primate Research Center, report new findings in the journal Science that a nutritious, but reduced-calorie, diet blunts aging and delays the
onset of such aged-related disorders as cancer, diabetes, cardiovascular disease and brain atrophy. This image relates to an article that appeared in the July 10, 2009, issue of Science, published by AAAS. The study, by Dr. Ricki Colman of the Wisconsin National Primate Research Center and colleagues was titled, "Caloric Restriction Delays Disease Onset and Mortality in Rhesus Monkeys."