This document discusses carbohydrate counting for managing diabetes. Carb counting involves following a meal plan that specifies grams of carbs per meal and snack, and using an insulin-to-carb ratio to determine insulin dosage. For those with type 1 diabetes, carb counting helps control blood sugar levels. Those with type 2 diabetes also need to count carbs to control portions and support weight loss through a balanced, limited sugar diet with regular physical activity. Common carb foods are listed along with serving size guidelines to estimate grams of carbohydrates from labels.