At least half of all fatal cancers could be prevented. Eating a varied diet that includes plenty of vegetables and fruits has been shown to reduce the risk of many cancers. 2 Don't smoke.
Lung cancer is the number one cause of cancer deaths in the United States.
Regular exercise may reduce the risk of certain cancers. It also helps stave off obesity, which is a major risk factor for breast and other cancers. 4 Get regular screenings. 5 Limit exposure to the sun. Also, be sure to wear a sunscreen that blocks both UVA and UVB rays.