GlossaryBariatric surgery: (Etymology: Greek words "baros," meaning "weight," and "iatrikos," meaning "medicine") is the term for a surgery that helps you lose weight.Roux-en-Y Gastric Bypass: the most common surgical weight loss procedure that decreases stomach volume and nutritionally bypasses the normal food stream. Body Mass Index (BMI): BMI is calculated as weight (in kilograms)/height squared (in meters).Hyperlipidaemia: Excessive amount of fat in the blood. Hypertension: Increase in blood pressure. Published on Jan 11, 2017Last Updated on Sep 25, 2020