Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Diabetes Health Center

Font Size

Diabetes May Raise Colon Cancer Risk

Excess Insulin May Be to Blame
WebMD Health News

May 19, 2004 (New Orleans) -- Diabetes may raise the risk of developing colon cancer, the nation's second-leading cancer killer, new research shows.

"The risk factors for the two conditions are remarkably similar: obesity, sedentary lifestyles, and poor diet," says Rambabu Chalasani, MD, of Overton Brooks VA Medical Center in Shreveport, La. In the study veterans who suffered from type 2 diabetes were about one-third more likely to develop colon cancer than patients without diabetes.

The study was presented at Digestive Disease Week, a medical meeting of digestive disease experts.

"Both disorders are tied to industrialization, with the highest incidence in developed nations," he says.

A link between obesity, diabetes, and colon cancer makes sense, Chalasani tells WebMD. The common culprit: too much insulin in the blood.

As a person becomes more overweight, his or her body becomes resistant to insulin. To compensate, the body makes more and more of the sugar-lowering hormone. There is now mounting evidence that insulin stimulates the growth of cancer cells, he says.

Another Reason to Eat Right, Exercise More

Bernard Levin, MD, vice president for cancer prevention at the M.D. Anderson Cancer Center of the University of Texas in Houston, notes that this isn't the first time that diabetes has been linked with colon cancer. "But for some reason the word is not getting out; not enough people, including doctors, are aware of the [possible link]," he says.

A link between diabetes, colon cancer, and obesity would have major implications for our health, researchers agree.

People with diabetes should probably get screened for colon cancer at an earlier age and be tested more often than people without the blood sugar disorder, Levin tells WebMD.

He also says if the link exists then there are implications for what we eat and what we do. Processed and sugary foods such as cakes, cookies, and candies cause blood sugar levels to spike -- causing our body to make more insulin -- and should probably be avoided. Instead, try whole grains, vegetables, and nuts, says Levin. These foods help stabilize blood sugars causing them to rise more slowly.

And of course, get active. Exercise not only helps to shed unwanted pounds, but the weight loss also helps lower insulin levels.

The American Cancer Society recommends exercising at least 30 minutes on five or more days of the week - and walking and gardening count. Speak with your health care provider before starting an exercise program if you have diabetes and heart disease.

Today on WebMD

Diabetic tools
Symptoms, diagnosis, treatment, and more.
woman flexing muscles
10 strength training exercises.
Blood sugar test
12 practical tips.
Tom Hanks
Stars living with type 1 or type 2.
kenneth fujioka, md
Can Vinegar Treat Diabetes
Middle aged person
jennie brand miller

Prediabetes How to Prevent Type 2 Diabetes
type 2 diabetes
food fitness planner