1. Everything you eat should be as fresh as possible. Spoiled, moldy, or rancid foods, especially if they contain rancid or oxidized fats or oils, are high in carcinogens, such as aflatoxin. Throw out perishables that are more than three days old or put them on the compost pile unless they are meat, bones, or foods high in grease or oil. Reduce your consumption of preserved foods unless they are fermented. (See #6 below.) Choose fresh, raw foods over canned or even frozen foods. Just picked is even better. We recommend growing your own vegetables and fruits, if possible.
2. Reduce your consumption of deep-fat fried foods, especially French fries, which are often made in old, rancid oil or hydrogenated oil, which is a totally artificial form of fat. Reduce your consumption of beef and pork, which are high in fat, much of which is polyunsaturated and becomes oxidized more quickly. Eat more fresh fish from unpolluted waters, lamb, fowl, and wild game.
3. Increase your consumption of foods high in vitamin C: oranges, limes, lemons, green peppers, hot peppers, ripe tomatoes, etc. Use natural vitamin C powder mixed into freshly-squeezed orange juice if you want to increase your vitamin C intake. Most people need much more vitamin C than the RDA, but you don't want to drink too much orange juice because of its high sugar content.. Also, add some juice from fresh lemons or limes to the orange juice to provide a more complete intake of vitamin C and the synergistically-acting bioflavonoids (sometimes called vitamin P). Vitamin C is vital in keeping the immune system functioning properly.
4. Avoid fat and sugar. Try to reduce your consumption of ice cream, which has high levels of fat and sugar, plus usually artificial coloring and flavoring. Avoid margarine completely. Some margarines still contain polyunsaturated, hydrogenated fat and often have artificial coloring and flavoring. Butter or olive oil, used sparingly, is better. Reduce your intake of processed oils, mayonnaise, salad dressings, etc.
5. Reduce your consumption of salt, except possibly in miso soup if you aren't allergic to soy products, because some cancerous cells are high in sodium and low in potassium, which is the exact opposite of normal cells. Vegetables, fruits, and cereals are high in potassium. Eat organic produce that is unsprayed with pesticides so that you don't have to wash them very much. Potassium is water soluble and is easily lost by soaking or washing the fruits and vegetables in water. Avoid water softeners that add sodium and remove vital minerals such as calcium and magnesium in the water. Drink hard water that contains these minerals; use bottled spring water if local water is soft or polluted.