Processed sugars can have detrimental effects on energy levels. When consumed, these sugars lead to a rapid spike in blood glucose, providing a quick energy boost. However, this is often followed by a sharp decline, resulting in a crash that can leave individuals feeling fatigued and lethargic. This cycle of highs and lows affects overall metabolic health and can contribute to weight gain and cravings for more sugar. For sustained energy, it’s better to focus on complex carbohydrates found in whole foods, as these provide a more stable release of energy over time.