The Diabetes and Cancer Link

What you need to know.

Theresa GarneroBy Theresa Garnero, APRN, BC-ADM, MSN, CDE

One more thing to add to the "forewarned is forearmed" list: researchers have found several connections between diabetes and cancer.

Although that may come as frightening news, some of the evidence may come as a surprise: some types of cancer rates are higher while rates of other types are lower in people with diabetes, a common medicine for type 2 may prevent cancer, and a cancer drug may help prevent type 1 diabetes.

Research Findings
A recent large-scale study following over 125,000 people with type 2 diabetes lead by Dr. Kari Hemminki of the German Cancer Research Center, found an increased risk for 24 types of cancer. The most significant rates were for pancreatic and liver cell cancers (elevated by factor 6 and more than 4 times the risk respectively compared to the general population). Since pancreatic cancer and diabetes both involve the pancreas, evidence remains unclear on whether diabetes causes or results from the cancer. Risk for cancers of the kidneys, thyroid, esophagus, small intestine, and nervous system were more than twice the rates of those without diabetes.

Other studies have found the following:
1. Meta-analyses from 15 studies and 2.5 million people with diabetes resulted in a 30 percent more likelihood of developing colorectal cancer. Women with type 2 over the age of 55 had double the risk.

2. Women with diabetes had a 20 percent greater risk of developing breast cancer. People with breast cancer treated with chemotherapy and metformin have better outcomes.

3. Metformin use is associated with an anti-cancer effect as those who take it have substantially lower cancer rates (62 percent lower risk of pancreatic cancer and up to 37 percent reduced risk for all cancers). Notably, research has also shown that people with diabetes already diagnosed with cancer may respond better to chemotherapy when treated simultaneously with metformin.

4. Those who take both Actos or Avandia and metformin have a 35 percent reduction in cancer mortality.

5. Further research is needed to better understand the risks and mechanisms that appear to link insulin with tumor growth. This finding may have more to do with insulin resistance rather than a direct effect of insulin itself.

Page: 1 | 2

Last Modified Date: July 08, 2013

All content on is created and reviewed in compliance with our editorial policy.

Sign up for FREE dLife Newsletters

dLife Membership is FREE! Get exclusive access, free recipes, newsletters, savings, and much more! FPO

You are subscribed!
You are subscribed!
You are subscribed!
1080 Views 0 comments
by Brenda Bell
Many people say that depression is a side effect or complication of diabetes. Without discounting the association of the psychological condition with the physical one, I'm not convinced that our high and/or unstable glucose levels are directly responsible for that change in our mental state. My belief is that the unrelenting need for self-care, for following the sort of care schedules that can drive licensed, professional caregivers crazy, is what overwhelms us...
  • Watch dLifeTV online now!

    Click here for more info