Berries and cherries are among the "power foods" of the food pyramid. For example, the ellagic acid in dark colored berries such as raspberries may inhibit tumor growth.
Cranberries appear to keep bacteria from adhering to the bladder and causing urinary tract problems; the mechanism may also help prevent ulcers.
Eating just 35 sour cherries may reduce pain better than aspirin because the anthocyanins found in cherries inhibit inflammation-causing enzymes.
Cherries contain perillyl alcohol, which may inhibit colon, breast and prostate cancers.
Personally, I like berries and if they add to my health it is an added bonus. Berries are expensive and they are not always available. I have solved the problem by buying frozen. I use some on cereal every day. It can't hurt and may very likely help.