People who do eat plenty of fruit and vegetables, or take supplements, have a 17 percent reduced risk of developing cutaneous squamous cell carcinoma, the second most common form of skin cancer.
Researchers from Brown University analysed the health and diets of around 173,000 people, nearly 4,000 of whom developed the skin cancer. Those who had the highest levels of vitamin A were 17 percent less likely to develop the cancer than those with the least amount of the vitamin.
The most effective source for getting the vitamin was from fruits and vegetables, such as sweet potatoes, broccoli, carrots, leafy green vegetables and fruits such as apricots and cantaloupe.
Animal sources of the vitamin include liver and some fish, but the researchers warn that an over-reliance on eating the meat can increase the risk of liver toxicity, osteoporosis and hip fracture.