Diabetes is a deadly disease. In fact, diabetes takes more lives than AIDS and breast cancer combined, according to the Diabetes Research Institute Foundation. The two most common types of diabetes are type 1 and type 2. With type 1 diabetes, the body’s immune system attacks the part of the pancreas that produces insulin. Without insulin, glucose can’t enter the cells and instead builds up in the bloodstream. People with type 2 diabetes are able to produce some of their own insulin, but it’s often not enough. Besides a regular regimen of exercise—even walking for just 30 minutes every day—controlling the amount of sugar you eat is one of, if not the, most important factors in preventing type 2 diabetes. Here are 18 foods you can eat to help prevent the onset of diabetes.