Videos: Frequently Asked Questions (FAQs) View Dr. Sharma on TV What does “Bariatric” mean? What is obesity? Is obesity a disease? Can obesity be cured? What is BMI? What level of BMI is dangerous? Does the same level of BMI apply to all populations? How can I measure my body fat? What is bioimpedance analysis? What is DEXA? Are there different types of fat? What is abdominal fat? What is visceral fat? What is ectopic fat? Why measure waist circumference? Is it true that you are born with a fixed number of fat cells? Is it important if you have large or small fat cells? What should be my weight loss goal? Which diet is best for me? Does dieting make you fat? Why does it seem more difficult to lose weight each time you diet? What are calories? Why are calories important? How do I know how many calories I am eating? What is a serving size? What is the difference between hunger and appetite? Why do I never feel full after a meal? Why do I feel hungry soon after a meal? How much exercise do I need to lose weight? Do diet pills work? Is surgery the best treatment for severe obesity? What is the best type of obesity surgery? How safe is obesity surgery? Do most patients do well after obesity surgery? Why does obesity lead to diabetes? How does obesity increase blood pressure? Does obesity increase the risk for asthma?