Why Count Carbohydrates? A carbohydrate is a starch or sugar that turns to glucose in your system more quickly than a protein. Carbohydrate counting has been proven to take the guesswork out of good blood sugar control. Education and self-management is the best way to gain control over diabetes, improve quality of life and prevent complications. CARB CARDS is a fun and easy way to introduce this concept. View Fun Activities with Carb Cards