We all want to protect ourselves from the world’s number one killer – cancer. Here are some of the top tips that experts say can dramatically lower our risk of getting the disease:

  • Get a little bit of sun. Research shows that vitamin D protects against non-Hodgkin's lymphoma, breast cancer, and colon cancer. But vitamin D lies dormant in the skin unless the sun’s ultraviolet rays activate it. Of course, we need to be careful. Too much sun increases our risk of skin cancer. So 10-to-15 minutes of unprotected exposure three days a week is plenty.

  • Chow down on oranges, broccoli, and bananas. Compounds in oranges kill a strain of stomach bacteria that’s linked with stomach cancer. The antioxidants in bananas cut the risk of kidney cancer in half. And a compound in broccoli called sulforaphane can slow, and even stop, the growth of many tumors.

  • The next tip could prevent 1-in-5 cancer deaths: Lose weight. According to the American Cancer Society, excess pounds cause a hormonal imbalance that contributes to cancers of the breast, uterus, pancreas, esophagus, and thyroid.

  • This final tip is a must for people over 50: Get a colonoscopy. Colorectal cancer is the second leading cause of cancer death. And a study in The New England Journal of Medicine proves that regular screenings reduce cancer deaths by 53%.