Risks

Carbohydrate loading isn't right for every endurance athlete. It's a good idea to consult your doctor or a registered dietitian before you start carbohydrate loading, especially if you have diabetes. You may also need to experiment with different amounts of carbohydrates to find what works best for you.

A carbohydrate-loading diet can cause some discomfort or side effects, such as:

• Digestive discomfort. You may need to avoid or limit some high-fiber foods one or two days before your event. Beans, bran and broccoli can cause gassy cramps, bloating and loose stools.
• Blood sugar changes. Carbohydrate loading can affect your blood sugar levels. If you have diabetes, monitor your blood sugar during training or practices to see what works best for you. And talk to your dietitian or doctor to make sure your meal plan is safe for you.