Extreme diets for weight loss can pose serious dangers to physical and mental well-being. These diets often involve drastic reductions in caloric intake, which can lead to nutrient deficiencies and a slowed metabolism. Such practices may result in loss of muscle mass and long-term health issues, including heart disease and gastrointestinal problems. Moreover, extreme diets can trigger unhealthy relationships with food, potentially leading to eating disorders. When individuals gain back the weight after these diets, they may experience feelings of failure or shame, adversely affecting their mental health. Sustainable changes are essential for long-term success.