The bottom line

Following a low-GI diet may help you lose weight or keep a healthy weight. It may help you manage a diabetes plan. It may lower your risk of diabetes and heart and blood vessel diseases.

The glycemic index also could be one tool, rather than the main tool, to help you make healthier food choices. The Dietary Guidelines for Americans recommends a focus on healthy dietary patterns and nutrient-rich foods.

A healthy dietary pattern means making consistently healthy choices over time. Foods that fit in that pattern vary. They include a variety of fruits and vegetables that provide vitamins, minerals and fiber. A healthy dietary pattern also includes whole-grain foods that are high in fiber and other nutrients. Beans, legumes, fish, low-fat dairy and lean meats are also good choices.