Excessive sugar consumption can lead to various metabolic health issues, including insulin resistance, obesity, and an increased risk of type 2 diabetes. High sugar intake can contribute to weight gain by providing empty calories and promoting cravings, leading to overeating. Additionally, it can cause fluctuations in blood sugar levels, which may result in energy crashes and mood swings. Over time, these metabolic disturbances can significantly impact overall health, making it essential to moderate sugar intake for long-term wellness.