Pomegranate

If you're going to have a martini, at least make it a pomegranate one. This fall fruit has higher antioxidant activity than red wine and green tea, which may be why a number of studies show it may prevent skin cancer and kill breast and prostate cancer cells. This healthy fruit also helps:

Fight Alzheimer's disease: Researchers at Loma Linda University found that mice who drank pomegranate juice experienced 50% less brain degeneration than animals that consumed only sugar water. The pomegranate drinkers also did better in mazes and tests as they aged.

Guard your arteries: A group of diabetics who drank about 2 ounces of pomegranate juice a day for 3 months kept their bodies from absorbing bad cholesterol into their immune system cells (a major contributing factor to hardened arteries), discovered Israeli researchers.