The long-term effects of excessive calorie restriction can include significant health complications, such as nutrient deficiencies, metabolic slowdown, and loss of lean muscle mass. Prolonged calorie deficits can disrupt hormonal balance, leading to issues like decreased thyroid function and reproductive health problems. It may also impact mental well-being, resulting in fatigue, irritability, and difficulties in concentration. Furthermore, chronic restriction can lead to an increased risk of eating disorders and unhealthy relationships with food. Sustainable eating practices that promote overall health are more beneficial than drastic diets that limit calorie intake significantly.