Avoid Ruining the Right Foods

The American institute for Cancer Research's Diet and Cancer Project, Food Nutrition and Prevention of Cancer, recommends that by avoiding the following, you'll decrease your risk of cancer.

Avoid salted foods and table salt whenever possible; season your foods with herbs.
Avoid eating food that was "left out" for long periods of time; the food can become contaminated with bacteria.
Avoid eating perishable foods that were not refrigerated.
Avoid unlabelled foods when travelling in underdeveloped or developing countries, as contaminants, additives and other residues are not properly regulated in these areas.
Avoid charred foods, or meat and fish cooked over an open flame.
Avoid cured or smoked meats.  The nitrites these foods contain are carcinogenic.

Stopping Cancer at the Source  -  M. Sara Rosenthal, Ph. D.