Preliminary evidence from one of the largest studies of calorie-restricted diet in primates shows health benefits. Previously studies have shown this to be true with mice. Reports from researchers at the National Primate Research Center at the University of Wisconsin-Madison: a 30% caloric restriction begun in rhesus monkeys in adulthood reduces risk of the most common age-related conditions (e.g., diabetes, cancer, heart disease, and brain atrophy) by one third. (Bourzac, Katherine. Do Dieting Monkeys Live Healthier and Longer Lives? Calorie Restriction Slows Aging in Monkeys.)