The glycemic index (GI) measures how quickly carbohydrates in food raise blood glucose levels. Foods with a high GI can prompt rapid spikes in blood sugar, leading to energy crashes and increased hunger. Conversely, low-GI foods promote stable energy levels and can improve satiety. Understanding the glycemic index is essential for managing diabetes and enhancing weight management efforts. Incorporating low-GI foods into the diet can foster better blood sugar control and contribute to overall health.