The pressure to lose weight often makes people resort to extreme diets to achieve their goal quickly. But not only are extreme diets unsustainable, they can harm your health as well. A few of the many risks include: • Malnutrition • Muscle loss • Electrolyte disorders • Gallstone formation • Dehydration • Decline in immunity Before embarking on a weight loss program, do consult your doctor. He/she can guide you so that you achieve your goals in a healthy manner.