Diabetes: Alcohol, Cigarettes and Diabetes Up Colorectal Cancer Risk

It's been known for some time that obesity and eating lots of red meat can raise the risk of colorectal cancer, but new research sheds light on other lifestyle factors that increase risk. Drinking alcohol, smoking cigarettes and having diabetes also play a major role in determining who is going to develop colorectal cancer, study findings show.

And although exercise seemed to help ward off colorectal cancer, eating lots of fruits and vegetables didn't, according to researchers at The George Institute for International Health in Australia. "Most people probably know that being overweight and having poor dietary habits are risk factors for the disease," said study author Rachel Huxley, an associate professor at The George Institute. "But most are probably unaware that other lifestyle risk factors such as alcohol consumption, cigarette smoking and diabetes are also important culprits," she said in a news release from the institute.

Not counting skin cancers, colorectal cancer is the third most common cancer among U.S. adults, according to the American Cancer Society. An estimated 50,000 people will die of colorectal cancer this year in the United States. Worldwide, about one million new cases of colorectal cancer are diagnosed annually and more than half a million people die, according to background information in the news release.