Frequently eating red and processed meats, such as steak, cold cuts, and pastrami, may increase a person's risk of colon cancer, a new study reports. Opt for healthier protein choices, such as tofu, legumes, fish, nuts, seeds, and peanut butter, and limit red meat servings to one or less per week.

Benefit:  Reducing your saturated fat intake to below 10% can make you years younger.