Simple carbohydrates consist of sugars that provide quick energy but can lead to rapid spikes in blood sugar. These are typically found in processed foods, sweets, and sugary beverages. In contrast, complex carbohydrates consist of longer chains of sugar molecules and take longer to digest, providing sustained energy. They are found in whole grains, legumes, and vegetables and often contain more fiber, vitamins, and minerals. Prioritizing complex carbohydrates in the diet supports better digestion, stable energy levels, and long-term health.