Increased intake of vitamin C from the diet, but not from supplements may slash the risk of mouth cancer by 48 percent, says an epidemiological study.

The study, published in the International Journal of Cancer, used data on supplement use and diet for 42,340 men in the Health Professional Follow-Up Study. During the course of the study, 207 oral pre-malignant lesions were documented.


Vitamin C from dietary sources was significantly associated with a reduced risk of mouth cancer, but no association with the vitamin from supplements was found.

Vitamin C is needed to form collagen, a tissue that helps to hold cells together. It's essential for healthy bones, teeth, gums, and blood vessels. It helps the body absorb iron and calcium, aids in wound healing and contributes to brain function.

You can find high levels of vitamin C in red berries, kiwi, red and green bell peppers, tomatoes, broccoli, spinach, and juices made from guava, grapefruit and orange.