Cancer
There are more than a hundred types of cancer, all marked by uncontrolled growth of abnormal cells. Most begin as solid tumors, from which cancer cells can spread (metastasize) to other parts of the body.
Why healthy cells turn cancerous is unknown. But such factors as smoking, excessive sun exposure, pollutants, stress, and a poor diet appear to play a role. Any of these may weaken the immune system, which is then unable to attack cancer cells effectively, or expose the body to free radicals, unstable oxygen molecules that can damage cells.

For additional protection, the nutritional supplements green tea extract and grape seed extract may help prevent a host of cancers, including lung, breast, stomach, colon, prostate, and skin. Though it's not an antioxidant, flaxseed oil is important because it contains compounds called lignans, which may protect against breast, colon, and prostate cancers. Rotating Echinacea in three-week cycles with extracts of medicinal mushrooms and other immune-boosting herbs may help to strengthen overall immunity during cancer treatments.

The Coriolus versicolor mushroom has shown particular promise against lung, stomach, and colon cancers. Taking a liver detoxification formula (sometimes called a lipotropic combination in health-food stores) to help prevent the buildup of dangerous cancer promoting toxins in the body may hold some potential for prevention.
Herbs and Supplements for cancer
Aloe
American Ginseng
Asian Ginseng
Beta-Carotene
Bilberry
Calcium
Cartilage
Cat's Claw
Celery Seed
Gamma-Linolenic Acid (GLA)
Garlic
Ginger
Glutamine
Grape Seed
Green Tea
Milk Thistle
Omega-6 Fatty Acids
Pau d'Arco
Quercetin
Red Clover
Rosemary
Selenium
Turmeric
Vitamin A (Retinol)
Vitamin B9 (Folic Acid)
Vitamin C (Ascorbic Acid)
Vitamin D
Vitamin E