What You Really Need to Know about Cancer

Wednesday, January 18, 2017

How does Vitamin C Kill Cancer Cells?

Vitamin C‘Vitamin C can kill cancer cells’ has been always believed to be a myth until University of Iowa’s redox biology expert Garry Buettnerhas and his team has proven that high dose vitamin C given intravenously can kill cancer cells.

Usually vitamin C therapy involves taking vitamin C supplements orally, but professor Garry Buettner and his team has found that when vitamin C supplements are taken orally, natural metabolic mechanism limits its absorption to (systemic circulation) blood stream and subsequently it has less effectiveness in terms of killing cancer cells.

However, Professor Garry Buettner and his team has found that when vitamin C is given via intra venous ( through vein ) thus bypassing normal gastrointestinal metabolism and excretion pathways—creates blood levels that are 100 to 500 times higher than levels seen with oral ingestion. This high level of Vitamin C in the blood directly attacks cancer cells.

Earlier work by Professor Garry Buettner found that these extremely high level of vitamin C kills cancer cells and don’t harm normal cells in test tube and in mice. Doctors at university of Iowa are now testing the approach in clinical trials for pancreatic cancer and lung cancer that combine high-dose, intravenous vitamin C with standard chemotherapy or radiation. Earlier phase 1 trials indicated this treatment is safe and well-tolerated and indicated that the therapy improves patient outcomes. 

The Role of Vitamin C killing Cancer Cells
In a new study published in December issue of the Journal of Redox Biology, Buettner and his colleagues have explained the mechanism how high dose of vitamin C kills cancer cells. The study reveals that vitamin C break down easily, forming hydrogen peroxide ( a free radical), which can damage human tissue and DNA, but the researchers further found that the healthy cells seemed to have self-defensive mechanism that easily allowed them to resist the oxidizing effects of hydrogen peroxide. However, tumor cells are more prone to get damaged and destroyed by the chemical.

“In this paper we demonstrate that cancer cells are much less efficient in removing hydrogen peroxide than normal cells. Thus, cancer cells are much more prone to damage and death from a high amount of hydrogen peroxide,” says Buettner, a professor of radiation oncology and a member of Holden Comprehensive Cancer Center at the University of Iowa. “This explains how the very, very high levels of vitamin C used in our clinical trials do not affect normal tissue, but can be damaging to tumor tissue.”

Do not attempt to use this treatment by yourself. This treatment must be used under the direction of cancer experts who are based at a clinic.

Foods Rich in Vitamin C and Vitamin C serving values

Strawberries
Vitamin C in 100g...............58.8mg (98% DV)
Per cup sliced (166g)...........97.6mg (163% DV)
1 large strawberry (18g) ......10.6mg (18% DV)

 

Citrus Fruits (orange)

Vitamin C in 100g..................53.2mg (89% DV)

Per cup, sections (180g).........95.8mg (160% DV)

Per orange (131g)...................69.7mg (116% DV)

 

Papayas

Vitamin C in 100g .................60.9mg (102% DV

Per cup pieces (145g)............88.3mg (147% DV)

1 small papaya (157g)...........95.6mg (159% DV)


Kiwi

Vitamin C in 100g..................92.7mg (155% DV)

Per cup, sliced (180g)............166.9mg (278% DV)

Per fruit (69g)........................64mg (107% DV)

 

Bell Peppers

Vitamin C in 100g .............183.5mg (306% DV)
Per 10 strips (52g)...............95.4mg (159% DV)
Per large pepper (186g)........341.3mg (569% DV)

 

Guava

Vitamin C in 100g ................228.3mg (381% DV)

Per cup (165g).......................376.7mg (628% DV)

Per fruit (55g)........................125.6mg (209% DV)

 

Dark greens leafy

Vitamin C in 100g.................120mg (200% DV

Per cup chopped (67g)...........80.4mg (134% DV)

 

Broccoli

Vitamin C in 100g.................89.2mg (149% DV)

Per cup chopped (92g)...........81.2mg (135% DV)

 

Tomatoes

Vitamin C in 100g..............22.8mg (38% DV)
Per cup (240g)....................54.7mg (91% DV)
Per 2 tomatoes (246g).........56.1mg (93% DV)



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