Honey affects the blood sugar of a person with type 2 diabetes in about the same way sugar does, states Mayo Clinic. Because honey is sweeter than sugar, less is often needed. However, honey has more carbohydrates and more calories per teaspoon.
People with diabetes should primarily be concerned with the amount of carbohydrates consumed rather than the specific type, according to the American Diabetes Association. It is safe to substitute limited amounts of sweeteners for other carbohydrates. However, sugary foods tend to pack a lot of carbohydrates into small servings, so people with diabetes still need to monitor their intake of sugar or honey.