Beta Carotene

Alpha, Beta, and Gamma carotene are considered provitamins because they can be converted to active vitamin A.  Beta-carotene have generally been associated with reduced cardiovascular disease risk in observational studies. 

Beta-carotene is found in many foods that are orange in color, including sweet potatoes, carrots, cantaloupe, squash, apricots, pumpkin, and mangos. Some green leafy vegetables including collard greens, spinach, and kale are also rich in beta-carotene.