Diabetics should avoid foods that are high in saturated fat and cholesterol and that have hydrogenated and partially-hydrogenated oils listed on the label, states the American Diabetes Association. These substances are high in trans fats and can cause further health problems.
Polyunsaturated fats, which are considered healthy fats, are okay as long as eaten in moderation. Healthy fats under the ingredient list on food labels include olive and canola oils, notes the American Diabetes Association. Diabetics should also avoid foods with high levels of sodium as salt can negatively impact blood pressure and increase the risk of heart attack or stroke. Keeping a close eye on sodium and saturated fats is important because diabetics are more likely to develop heart disease. Processes, packaged foods typically contain high amounts of sodium.
There are a few different schools of thought on whether artificial sweeteners are okay or should be avoided by diabetics. While the Mayo Clinic points out that artificial sweeteners don't raise blood sugar levels, USA Today reports in 2014 that a study suggests that artificial sweeteners actually lead to diabetes in some people. Experts suggest that those with diabetes avoid diet sodas and other artificial sweeteners, especially aspartame, saccharine and sucralose.