You're young, healthy, and wondering why the c-word deserves a spot on your list of concerns. While it's true that cancer usually strikes later in life, mounting evidence suggests that the healthy habits you develop now are your best defense against developing the disease down the line. Estimates suggest that as many as a third of the most common cancers in the U.S. can be prevented by following cancer-prevention guidelines—i.e. maintaining a healthy weight, getting regular exercise, using sunscreen, and not smoking.

For a run-down of the top guidelines that guys like you should be aware of, we chatted with Alpa Patel, Ph.D., strategic director of the American Cancer Society’s Cancer Prevention Study-3, who outlined 10 ways to stock your anti-cancer arsenal and keep long-term risk low.