Ask five nutritionists to rate the 13 most powerful foods and you'll get five different lists, but many of the selections will overlap. Why? Because every food provides something different: Some are a rich source of  protein or fiber but void of many vitamins and minerals, while others contain disease-fighting phytonutrients, vitamins and minerals, but no protein. The trick, claim experts, is to get a variety of the best foods. The following 13 power foods are a good place to start.

Avocados:

Sure, they're high in fat, but avocados contain healthful monosaturated fat, which has been linked to a reduced risk of cancer, heart disease, and diabetes. "Avocados aid in blood and tissue regeneration, stabilize blood sugar, and are excellent for heart disorders," says Ed Bauman, Ph.D., director of Bauman College. They're loaded with fiber (11 to 17 grams per fruit) and are a good source of lutein, an antioxidant linked to eye and skin health.  

 

Apples:

"An apple a day really does keep the doctor away," says Jonny Bowden, Ph.D., C.N.S., author of The 150 Healthiest Foods on Earth. Apples are loaded with the powerful antioxidants quercetin and catechin, which protect cells from damage - that means a reduced risk of cancer and cardiovascular disease, especially if you eat the skin. Research shows that the apple peel contains five times more polyphenols than the flesh. Apples and their skins pack a lot of fiber too (about twice that of other common fruits, including peaches, grapes, and grapefruit), which may help fight the battle of the bulge.

 

Blueberries:  

Antiaging superstars, blueberries are loaded with antioxidants, especially anthocyanins, which have been shown to improve vision and brain function. Studies show that eating blueberries slows impairments in motor coordination and memory that accompany aging. These little berries also reduce inflammation, which is inextricably linked with virtually every chronic disease from Alzheimer's and Parkinson's, to diabetes and heart disease. Other studies show that blueberries have much greater anticancer activity than other fruits.