Need a snack? Grab a bunch of grapes or some raisins for a great cancer-fighting snack. A study conducted by the University of California, Irvine, showed that patients with colon tumors who consumed 80 mg of grape powder each day which by the way equivalent of half a glass of wine or three servings of grapes had a considerable decrease in cancer activity in the tumors revealed by biopsies. The researchers believe consuming grapes may help prevent colon cancer, which is the third most common type of cancer in the United States. Even if cancer is not a concern for you, a bunch of grapes is an easy on-the-go snack to pack in your cooler every day. The antioxidants added to your diet won't hurt either.