The latest FDA review found only a small of evidence for an association between eating tomatoes and a decreased risk of certain cancers, according to an article published online July 10 in the Journal of the National Cancer Institute.
The reviewers found no evidence that tomatoes reduced the risk of lung, colorectal, breast, cervical, or endometrial cancer. However, there was very limited evidence for associations between tomato consumption and reduced risk of prostate, ovarian, gastric, and pancreatic cancers.(JNCI)
Several studies have reported an association between the consumption of tomatoes or lycopene, an antioxidant that gives tomatoes their red hue, and a decreased risk of some cancers, particularly prostate cancer. In order for foods and dietary supplements to be labeled with such health claims, the FDA must review and approve these claims based on the available scientific evidence.
A November 2005 evaluation of the scientific evidence linking tomatoes or tomato-based foods, lycopene, and reduced cancer risk found no evidence that tomatoes reduced the risk of lung, colorectal, breast, cervical, or endometrial cancer.
However, there was very limited evidence for associations between tomato consumption and reduced risk of prostate, ovarian, gastric, and pancreatic cancers. Based on this assessment, the FDA decided to allow qualified health claims for a very limited association between tomatoes and these four cancers. Their analysis found no credible evidence that lycopene, either in food or in a dietary supplement, was associated with reduced risk of any of the cancers evaluated.
For prostate cancer, for example, the FDA issued this statement: “Very limited and preliminary scientific research suggests that eating one-half to one cup of tomatoes and/or tomato sauce a week may reduce the risk of prostate cancer. [The] FDA concludes that there is little scientific evidence supporting this claim.” Yet we also know that not enough studies have actually been completed and the FDA really should keep an open study on this topic.
Have you ever cooked tomatoes in an old metal pot? The pot looks brand new when you’re finished. The tomatoes eat away at all the gook on the sides of the pan that have been cooked into it for years. The American Cancer Society has done several studies of their own. One recent study suggests whole tomatoes offer better protection from prostate cancer than lycopene supplements alone. The research, published in the Journal of the National Cancer Institute (Vol. 95, No. 21: 1578-1586), found that rats fed tomato powder (including seeds and skins) had less risk of dying from prostate cancer than rats fed a diet containing only lycopene.
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Friday, July 13, 2007
Tomatoes - Prostate, Ovarian, Gastric, and Pancreatic Cancers
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