Crash dieting for weight loss presents several drawbacks. Firstly, it often leads to rapid loss of muscle mass, which can negatively impact metabolism and long-term weight management. Such diets usually lack essential nutrients, causing fatigue, mood swings, and increased cravings, making them unsustainable. Additionally, the drastic caloric restriction often results in yo-yo dieting, where individuals regain weight quickly after returning to regular eating habits. This cycle can create a damaging relationship with food and lead to chronic disordered eating patterns. Sustainable weight loss should focus on balanced nutrition and gradual changes in lifestyle.