I believe that the answer is b. False because just because you don't have any symptoms doesn't mean you never will. For example, I never caught the flu in my childhood. But that doesn't mean I never will.
It increases the blood sugar. You have to make sure your blood sugar is not too low or not too high. If it becomes to high/low your health can become really bad. Yes, diabetes is harmful to your body because it can cause a heart disease, stroke, kidney damage, and nerve damage.
