Hot Dogs and Burgers May Increase Early Colorectal Cancer Development

When you get a colonoscopy, one thing the test looks for is adenomas, a type of polyp that is a benign growth. Not everyone who has adenomas develops cancer but in some cases, adenomas can become cancerous.OLYMPUS DIGITAL CAMERAResearch already shows that eating lots of red and processed meats increases the risk for colon cancer, now a review of the research suggests that they may also increase the risk of adenomas.The study was published this week in Cancer Causes Control. It was funded by the World Cancer Research Fund as part of AICR/WCRF’s Continuous Update Project (CUP), an ongoing review of cancer prevention research.

For the analysis, the authors looked at 26 population studies. Nineteen of the studies were case-control, where participants with and without colorectal adenomas recalled their past diet; the rest of the studies were prospective, where researchers first asked about the participants’ diet then the people were followed over time to see who developed colorectal adenomas. Continue reading

3 Cups of Tea a Week: Can It Reduce Cancer Risk?

Can that cup of hot tea help you reduce your risk of cancer? There’s a lot of research on the topic – much of it promising, as today an article in the Washington Post highlights.

The latest study on the topic also points to tea’s protective effect. This study focused on cancers affecting the digestive system, such as cancers of the colon and esophagus. Women who drink three or more cups of tea each week may have lower risk of digestive system cancers, the study suggests. At least for Chinese women who don’t smoke or drink alcohol.

The study was published in the American Journal of Clinical Nutrition.

This new study is a large one, analyzing data from almost 70,000 women who were part of the Shanghai Women’s Health Study. The women were 40 to 70 years old at the start; that was when they answered questions about how much tea they typically drink, along with other lifestyle habits. Every two to three years, the women again answered questions about their diet, physical activity, weight and lifestyle habits. Continue reading

Study: B Vitamin Supplements Neither Help nor Harm Colorectal Cancer Risk

Another supplement study, another finding that suggests supplements do not protect against cancer. This latest study focuses on B vitamins and colorectal adenomas or polyps, which have the potential to become cancerous.

Taking a combination of three B vitamin supplements, including folic acid, appears to neither increase nor decrease colorectal polyps, at least among women at high risk for heart disease. Earlier studies have suggested that too much folic acid may actually increase the risk of colorectal cancer for some people, so this finding showing the vitamins caused no polyps is important.

The study was published in the Journal of the National Cancer Institute.

In the study, approximately 5,500 women were randomly given a daily B vitamin supplement or placebo. The supplement was made up of folic acid (B9), vitamin B6 and vitamin B12. Folic acid is the synthetic form of folate, a vitamin found in dark leafy greens and peanuts. Continue reading