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Can Vitamins Help Shrink Cancer Tumors?

Cancer tumors develop when cancerous cells multiply and form malignant masses of tissue. Many times these cancerous cells break away from their original mass of cells, travel through your bloodstream and lymph nodes, and implant in various organs where they form additional cancer tumors. The exact cause of cancer tumors is unknown, but toxins, pollutants, metals, radiation, pathogens and genetics appear to contribute to this condition. Treatment typically consists of surgery, radiation and chemotherapy, but some vitamins may help slow the progression of cancer and shrink cancer tumors.

Vitamin B-12

Vitamin B-12 also lowers your risk of lung, breast and cervical cancer, according to Deborah Gordon, M.D., author of “Breast Health the Natural Way: The Women's Natural Health Series.” Foods rich in vitamin B-12 include:

  • beef liver
  • yogurt
  • tuna
  • eggs
  • ham
  • sirloin beef
  • ready-to-eat cereals
  • trout
  • chicken
  • milk [2](# 'inline-reference::“Breast Health the Natural Way: The Women's Natural Health Series”; Deborah Gordon
  • M.D

; 2001').

Vitamin C

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; 2001'). Foods rich in vitamin C include:

  • baked potatoes
  • oranges
  • grapefruit
  • grapes
  • cranberries
  • tomatoes
  • kale
  • Brussels sprouts

Vitamin D

; 1999'). Foods rich in vitamin D include:

  • salmon
  • fortified margarine
  • eggs
  • ready-to-eat cereals
  • tuna fish
  • milk
  • Swiss cheese
  • beef liver
  • sardines

Vitamin E

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Foods rich in vitamin E include:

  • kiwifruit
  • tomatoes
  • spinach
  • peanuts
  • broccoli
  • wheat germ
  • safflower oil


Zinc is a mineral that enhances immune system function and protects your body from damaging free radicals, according to Steve Blake, Sc.D., author of “Vitamins and Minerals Demystified.” Dr. Blake adds that zinc blocks genetic mutations that can contribute to cancer growth and tumor development and lowers your risk of reproductive cancers. Foods rich in zinc include:

  • wheat germ
  • veal liver
  • roast beef
  • sesame seeds
  • pumpkin seeds
  • oysters
  • peanuts
  • dark chocolate
  • lamb