Consuming sugar can influence energy levels and mood significantly. Initially, sugar provides a quick boost in energy as it rapidly raises blood glucose levels. However, this effect is often followed by a crash, leading to feelings of fatigue and irritability. A high sugar intake can also disrupt insulin sensitivity and contribute to mood swings. Over time, excessive sugar consumption may be linked to an increased risk of depression and anxiety. Balancing sugar intake with nutrient-dense foods is essential for maintaining stable energy and overall mood.