The risks associated with crash dieting include nutritional deficiencies, loss of lean muscle mass, and metabolic slowdown. These extreme diets can lead to unhealthy relationships with food and may increase psychological stress. Furthermore, crash diets often result in weight fluctuations, or the yo-yo effect, which may negatively impact long-term weight management efforts. Individuals may also experience fatigue, irritability, and decreased energy levels, making it challenging to maintain daily activities. Sustainable weight loss should focus on balanced eating and regular exercise, promoting health instead of quick fixes.