New studies show that in addition to being a good source of fiber, prunes may also help slow the aging process in both the body and brain. The results come from the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University.

Scientists measured the total antioxidant power of a number of foods through a test tube analysis called ORAC. Antioxidants protect the body by neutralizing free radicals that damage cells, leading to heart disease, cancer, eye disorders and other health problems.

Of fruits and vegetables tested, prunes topped the list with more than twice the level of antioxidants measured in other high-scoring fruits. Prunes (dried plums) scored 5,570 ORAC units, compared to 949 for fresh plums. Raisins, blueberries, blackberries, strawberries and raspberries followed prunes at the top of the fruit tests. Kale, spinach, Brussels sprouts, alfalfa sprouts and broccoli flowers led the vegetables.