... based on one study BE CAREFUL!! Case study: Beta-carotene Hundreds of studies show diets high in beta-carotene ….decrease risk of cancer But how did we really know it was the beta-carotene? We ... it! These are not magic foods! • Red/blue berries (grapes, blueberries, strawberries, cranberries, blackberries, etc) • Soy foods • Beans (pinto, garbanzo, lentils, kidney) • Oats and grains (oatmeal, ... pure alcohol, ie 12 oz beer, oz wine, 1-1/2 oz 80-proof spirits, or oz 100-proof spirits Cancer Guidelines July 1997 World Cancer Research Fund American Institute for Cancer Research Other observer...