Important annoucement from the ISF board. For more information click here...



Cancer is a group of diseases in which cells are aggressive, invasive, and frequently metastatic. Cancer may affect people at all ages.

There does not appear to be a great difference in the essential nutrients required by the body to fight the different type of cancer.  Current orthomolecular research indicates that most cancers may be treated with the same regimen of vitamins because orthomolecular treatments for cancer do not focus on the cancer tissues themselves, but rather attempt to boost the body’s own natural defense system to control the cancerous growths.


The orthomolecular approach suggests a comprehensive nutrient program. This must be combined with a balanced food intake to assist in boosting the body’s own natural defense mechanism. Vitamin C is the main required vitamin for boosting natural immunity.  Treatment with vitamin C and other antioxidants does not interfere with standard treatment of surgery, radiation and chemotherapy traditionally used as methods to treat cancer by oncologists.

Abram Hoffer, M.D., has found by observing over 1,500 cancer patients, that there is no negative interaction from vitamin C while patients are undergoing chemotherapy. In fact, vitamin treatment of these patients has resulted in prolongation of life.  Another study indicated that the overall 5 year survival rate for chemotherapy patients was less than 2.5% whereas a review of orthomolecular therapy has showed the survival rate to be 4 times as effective as chemotherapy.

Diet is very important. Foods that contain selenium help decrease the incidence of cancer.  A diet which is rich in vegetables, fruit and fish, avoids sugars, alcohol, red meat and chemicals should also decrease the incidence of cancer.

Orthomolecular treatment of cancer could include the use of the following supplements:

*A customized program must be developed by an orthomolecular practitioner


Articles and Resources

  • Saul AW. (Ed.) Intravenous vitamin C is selectively toxic to cancer cells. Townsend Letter for Doctors and Patients, December, 2005. . Also:
  • Orthomolecular Medicine News Service, November 9, 2007. Topical Vitamin C Stops Basal Cell Carcinoma.
  • Orthomolecular Medicine News Service, October 3, 2007. Vitamin D Boosts Health, Cuts Cancer Risk in Half.
  • Riordan, M.D. H.D., Jackson, MT James, and Schultz, ARNP Mavis. “High-Dose Intravenous Vitamin C in the Treatment of a Patient with Adenocarcino.” Journal of Orthomolecular Medicine. 5.1 (1990)
  • Hoffer, Dr. Abram. “Clinical Procedures in Treating Terminally Ill Cancer Patients with Vitamin C.” Journal of Orthomolecular Medicine 6.3.4 (1991)
  • Nanba, Ph.D Hiroaki. “Maitake D-fraction: Healing and Preventive Potential for Cancer.” Journal of Orthomolecular Medicine 12.1 (1997)
  • Hoffer, Dr. Abram. “The Megavitamin Revolution.” Journal of Orthomolecular Medicine. 7.1 (1995)
  • Hickey S and Saul AW. Vitamin C: The Real Story. Laguna Beach, CA: Basic Health Pub, 2008.
  • Hoffer A and Saul AW. Orthomolecular Medicine for Everyone. Laguna Beach, CA: Basic Health Pub, 2008.
  • Kunin, Richard. “Principles That Identify Orthormolecular Medicine: A Unique Medical Specialty”. Journal of Orthomolecular Medicine. 4 (1987)
  • Harnett, Cindy. “Victoria MD wins prize for theories on megavitamins” Times Colonist November 3, 2007
  • Hoffer, Dr. Abram.  Vitamin C and Cancer. Quarry Press, Kingston, ON, 2000.
  • Cameron, Ewan and Pauling, Linus. Cancer and Vitamin C. Philadelphia, PA: Camino Books, Inc., 1993.
  • Murray, Michael T. Encyclopedia of Nutritional Supplements: The Essential Guide for Improving Your Health Naturally. Roseville, CA: Prima Publishing, 1996.
    Hoffer, Dr. Abram. Healing Cancer. Toronto: CCNM Press, 2004.
  • Pauling, Linus. How to Live Longer and Feel Better. Corvallis: First Oregon State University Press, 2006.
  • Hoffer, Dr. Abram. Users Guide to Natural Therapies for Cancer Prevention and Control. Laguna Beach, CA: Basic Health Publications, 2004