A high-sugar diet poses various health risks, including increased chances of obesity, type 2 diabetes, and cardiovascular diseases. Excessive sugar can lead to insulin resistance, fueling metabolic syndrome. Additionally, high sugar intake negatively affects oral health, contributing to tooth decay and gum disease. There are also psychological effects, including mood swings and an increased risk of depression. To maintain long-term health, it is advisable to limit added sugars and focus on whole, nutrient-dense foods.