Block criticizes much of the vitamin C research. She points out that errors in experimental procedure and interpretation may actually underestimate the beneficial effects of vitamin C and other nutrients. It is also important, she says, to understand that these nutrients work together not alone. We shouldn't think about whether it's vitamin C or beta-carotene that fights cancer and other diseases. We need to remember that vitamins and minerals are packaged in fruits, vegetables, and other foods to provide optimal protection in optimal amounts.
References
1. Tubiana M. Human carcinogenesis--introductory remarks. American Journal of Clinical Nutrition 1991; 53: 223S-5S.
2. Ziegler R. Vegetables, fruits, and carotenoids and the risk of cancer. American Journal of Clinical Nutrition 1991; 53: 251S-9S.
3. Block G. Dietary guidelines and the results of food consumption surveys. American Journal of Clinical Nutrition 1991; 53: 356S-7S.
4. Stich HF, Mathew B, Sankaranarayanan R, Nair MK. Remission of precancerous lesions in the oral cavity of tobacco chewers and maintenance of the protective effect of beta-carotene or vitamin A. American Journal of Clinical Nutrition 1991; 53: 298S-304S.
5. Knekt P et al. Vitamin E and cancer prevention. American Journal of Clinical Nutrition 1991; 53: 283S-6S.
6. Forrest BC. Women, HIV, and mucosal immunity. The Lancet 1991; 337: 835-6.
7. Sngh VN, Gaby SK. Premalignant lesions: role of antioxidant vitamins and beta-carotene in risk reduction and prevention of malignant transformation. American Journal of Clinical Nutrition 1991; 53: 386S-90S.
8. Cameron E, Pauling L. Cancer and Vitamin C. Menlo Park, CA: The Linus Pauling Institute of Science and Medicine, 1979.
9. Block G. Vitamin C and cancer prevention: the epidmiologic evidence. American Journal of Clinical Nutrition 1991; 53: 270S-82S.