Extreme dieting poses potential risks to both physical and mental health. Severely restricting calories can lead to nutritional deficiencies, affecting energy levels and overall well-being. Rapid weight loss often results in muscle loss and metabolic slowdowns, creating rebound weight gain once normal eating resumes. Additionally, extreme diets can negatively impact mental health, fostering unhealthy relationships with food and body image issues. Sustainability and balanced nutrition are crucial for long-term success; drastic changes are often counterproductive and can lead to a cycle of restriction and bingeing.