This document discusses obesity, including how it is defined using Body Mass Index (BMI), health risks of obesity like heart disease, and social and psychological impacts. Key points made include: - Obesity is defined using BMI, which is a person's weight in kilograms divided by the square of their height in meters. A BMI over 25 is considered overweight. - Obesity increases the risk of heart attack by 60% and can also cause other health issues like asthma and erectile dysfunction. - Annually almost 3 million people die from obesity, which is 3 times higher than deaths from undernutrition. - Obese people often experience low self-esteem, depression, and social