Sugar Doesn’t Cause Cancer — But Be Cautious

Krista Maruschak Cleveland Clinic Cancer Center

A lot of people believe that sugar can feed, or cause cancer. While there are certainly some health risks that come along with consuming too much sugar, it’s not going to increase your risk of getting cancer. Krista Maruschak, a registered dietician at the Cleveland Clinic Cancer Center, told SurvivorNet that those who should be concerned about sugar are people who already have cancer.

“Sugar itself does not cause cancer,” says Maruschak. “If you’re already diagnosed with cancer, you do want to make sure you’re not eating an excessive amount of sugar in your diet. What could potentially help your cancer grow faster are insulin spikes in your blood. We have insulin spikes in our blood when we eat any sort of carbohydrate-containing food, but what’s going to cause more insulin to be secreted are the simple carbohydrates and the sugary foods.”

Learn more about SurvivorNet's rigorous medical review process.


Krista Maruschak MS, RD, LD is a registered dietitian at the Cleveland Clinic Cancer Center. Read More

Myth Busting

There’s a lot of false information floating around the internet about cancer – who can get it, what causes it, and how to cure it. SurvivorNet aims to put an end to common misconceptions.