Eat an orange every day.
Researchers in San Francisco found that infected people with high levels of vitamin C in their blood were less likely to test positive for the cancer-causing strain that causes peptic ulcers and leads to stomach cancer.

Get the colonoscopy.
Colorectal cancer is the second leading cause of cancer death in the United States.  (Schedule your first colonoscopy before your 50th birthday if you have a family history of colon cancer.)

Steam the green veggies.
Piles of studies have shown that piles of broccoli help stave off ovarian, stomach, lung, bladder, and colorectal cancers.   Steaming it for 3 to 4 minutes enhances the power of the cancer-fighting compound sulforaphane, which has been shown to halt the growth of breast cancer cells.

Go De-caff.
Downing 2 or more cups of decaf a day may lower the incidence of rectal cancer by 52%.

Drop 10 pounds.
Even if you're not technically overweight, gaining just 10 pounds after the age of 30 increases your risk of developing breast, pancreatic, and cervical, among other cancers.

Bananas are good for you.
Women who ate four to six antioxidant-laden bananas a week cut their risk of kidney cancer by 54%.

Got milk?
Those who took calcium faithfully for 4 years had a 36% reduction in the development of new precancerous colon polyps 5 years after the study had ended.

No smoking.
Lung cancer is well known as one of the main hazards of smoking. But everything the smoke passes on its way to the lungs can also turn cancerous: mouth, larynx, and esophagus.

Step away from the white bread.
You may run a higher risk of colorectal cancer than women who eat low-glycemic-load foods, finds a Harvard Medical School study involving 38,000 women. The problem eats are mostly white: white bread, pasta, potatoes, and sugary pastries. The low-glycemic-load stuff comes with fiber.

Heat the fruit.
Red fruits (watermelon, tomato, pink grapefruit) are loaded with lycopene, a substance that has been proven time and time again to be a potent cancer fighter.