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Processed Meat Linked to Bladder Cancer

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The new data come from an ongoing National Institutes of Health-AARP study and involved more than 300,000 participants. Researchers found that those study participants who reported eating the most processed meat had about a 30 percent greater risk of bladder cancer than those who ate the least.

What's more, those whose diets were highest in nitrites and nitrates (from processed meat as well as other sources) were about 33 percent more likely to develop bladder cancer than those whose diets contained the smallest amounts of these compounds.

Bladder cancer is currently the 10th most common cancer in the US, with over 70,000 cases diagnosed each year.

Link to Bladder Cancer Needs Confirmation; Link to Colorectal Cancer Convincing

The evidence that consumption of processed meat is linked to colorectal cancer was judged convincing by the independent expert panel behind the major AICR/WCRF report, Food, Nutrition, Physical Activity and the Prevention of Cancer: A Global Perspective.

This same report, published in 2007, found the evidence linking red and processed meat to bladder cancer too sparse to make a judgment. Although this new study's findings need to be confirmed, it represents a major contribution to the scientific literature on diet's role in bladder cancer.

Higginbotham noted that the AICR/WCRF report's findings are continually updated; data from this and other studies will be added to AICR/WCRF's database and are scheduled to be reassessed by independent experts in the future.

Until that time, AICR reiterates that for people who are concerned about cancer, there is already good reason to limit consumption of red meat and avoid processed meat.

Source: American Institute for Cancer Research

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