Extreme dieting can pose several dangers, including nutritional deficiencies and metabolic imbalances. Severely restricting caloric intake can lead to malnutrition, negatively affecting bodily functions, immune response, and energy levels. Furthermore, extreme diets may promote unhealthy relationships with food, leading to potential eating disorders. The risk of yo-yo dieting is also prevalent, where rapid weight loss is followed by weight regain, creating a cycle that's harmful to both mental and physical health. Sustainable weight loss should focus on balanced, healthy eating patterns rather than drastic dietary changes to ensure long-term well-being.