New research shows vitamin C may have the potential to fight cancer in humans. While this particular study focused on ovarian, pancreatic and brain tumors in laboratory mice (considered aggressive cancers), these results could likely have similar effects in humans. In the study, researchers injected high doses of vitamin C, also known as ascorbic acid, to allow for larger concentrations in the mice. For those mice receiving the vitamin C injections, cancerous tumor growth was half that of the mice that did not receive the vitamin C injections. The researchers believe that the large amounts of vitamin C produce hydrogen peroxide within the body that kills cancer cells but doesn't appear to harm the normal cells. Their next step will be to test their findings on humans.
Source: National Institutes of Health. August 4, 2008.