1. Be as lean as possible. Normal is OK, but you actually want to be on the lower end of the normal range of the body mass index, a number that relates your weight to your height. Aim for a BMI of 21 to 23-for a man 6-feet tall, that’s abotu 162 pounds.
2. Be active. There’s no getting around it. You need 60 minutes or more of moderate exercise, or 30 minutes of vigourous physical activity, every day.
3. Avoid "energy-dense foods" and sugary drinks. That means cut way, way back on hight-calorie fast food and soda.
4. Eat mostly Plants. Shoot for five portions of nonstarchy fruits and vegatables each day. And french fries don’t count. The starchy vegetables like potatoes and yams probably don’t offer the same benefits as others such as greens, broccoli, okra, eggplants, and bok choy.
5. Back off on the red meat. Eat less than 500 grams (18 ounces) a week, and banish processed meats from your diet all altogether.
6. Limit alcohol. It’s two drinks a day tops for men and one for women.
7. Avoid salty foods. Salts can cause stomach cancer, so be wary of highly processed salt-infused foods. Some processeed foods that don’t seem very salty-such as bread or cereal-can actually be loaded.
8. Don’t pin your hopes on dietary supplements. High doses of nutrients can both protect against and promote cancer. But unless scientists can do a better job of sorting out which do which, your best bet will be to get the nutrients youi need from foods.
9. Breast-feed your baby. Doing this for at least the first six months will help protect both the mother from breast cancer and the infant from obesity and other problems.
Source: US News