"Prevention Is Worth A Pound Of Cure"

As many as 70% of known causes of cancers are avoidable and related to lifestyle, according to  http://www.prevention.com

  20 Ways to Prevent Cancer :

1. Filter your tap water 

2. Stop topping your gas tank 

3. Marinate meat before grilling

4. Caffeinate every day

5. Water down your cancer risk

6. Load up on really green greens

7. Snack on Brazil nuts

8. Burn off your breast cancer risk

9. Skip the dry cleaner

10. Ask your doc about breast density

11. Head off cell phone risks

12. Block skin cancer with color

13. Pick a doc with a past

14. Eat clean foods

15. Read food labels for folic acid

16. Up your calcium intake

17. Commit to whole grains

18. Pay attention to pain

19. Avoid unnecessary scans

20. Drop 10 pounds

It's up to you to change your lifestyle. No one else can do it for you.

Source: http://www.prevention.com/20-ways-to-prevent-cancer/list/1.shtml