Pumpkin

Studies have shown that due to the high content of beta-carotenoids, frequent consumption of pumpkin reduces the risk of stomach, breast, lung, and colon cancer.

An excerpt from the article 20 facts about Pumpkin
Beta-carotene also prevents the accumulation of cholesterol within the walls of the arteries, thus protecting them against atherosclerosis, heart attacks, and strokes. Besides, it regulates blood pressure.