A diet that includes sweet potatoes, cantaloupe, carrots,
black-
eyed peas, sweet red peppers, broccoli, spinach, dairy foods, fish and meat, especially liver, according to the U.S. National Institutes of Health (NIH). Supplements were not used in the study to get to appropriate levels of Vitamin A because of issues of having 'too much' vitamin A through supplements and other issues that arose. But by changing your diet, you may have some control over your skin cancer risk.