Excessive weight loss or extreme dieting presents serious health risks, including nutrient deficiencies, muscle loss, and potential metabolic slowdown. Such practices can lead to eating disorders, gastrointestinal issues, and an increased risk of heart problems. When the body lacks adequate nourishment, it may result in hormonal imbalances and decreased mental health, affecting one's mood and cognitive function. Additionally, extreme diets can reduce energy levels, making it challenging to maintain daily activities and achieve sustainable health goals.