Extreme diets can pose numerous risks, including nutrient deficiencies, metabolic slowdown, and potential heart problems. These diets often eliminate entire food groups or drastically reduce caloric intake, which can lead to serious health consequences over time. Emotional and psychological impacts, such as increased cravings and unhealthy relationships with food, are also prevalent. Sustainability is a key concern, as extreme dieting can lead to a cycle of weight loss and regain, ultimately harming metabolic health and overall well-being.