The risks of extreme diets include potential nutrient deficiencies, metabolic imbalances, and physical health complications. Such diets often restrict essential food groups, leading to inadequate intake of vitamins and minerals. Furthermore, extreme caloric restriction can slow metabolism, making it harder to maintain weight loss long-term. Psychological effects, such as eating disorders and an unhealthy relationship with food, may arise as individuals struggle to meet unrealistic expectations. A balanced approach to eating is crucial for sustainable health.