Complications and risks of weight loss

• Crash diets: muscle loss (which lowers metabolism), nutritional deficiencies, hair fall, gallstones (rapid loss is a known trigger), menstrual disturbance, and rebound gain past the starting point.
• Unverified products: liver injury from herbal slimming products, heart risks from stimulant fat-burners, electrolyte disturbance from laxative 'detoxes'.
• Eating disorders: extreme restriction, binge cycles, purging and obsessive exercise are medical conditions - anyone whose dieting starts controlling their life, or who sees these patterns, deserves compassionate professional care, not more discipline.
• Over-exercising injuries and under-fuelling.

The middle path that avoids both lists: moderate deficit, real food, regular activity, 0.5-1 kg a week, medical supervision when BMI is high, conditions exist, or medicines are involved.

Ayurvedic view (interpretive): classical texts warn against both excess accumulation and depleting regimens - a balanced instinct within an interpretive framework of limited evidence. The specific risks above are the operative list.

Remember: obesity's complications argue for action; bad-method complications argue for pace. Steady, supervised, sustainable - the risks live at both extremes.