Obesity is one of the most dangerous silent killers today. Many people are very afraid of this deadly disease. But, what does obesity actually mean? Obesity is the accumulation of excess fats in the body. To be specific, a person who is 20% over their ideal weight and whose Body Mass Index (BMI) is 30kg per meter squared or more is considered obese, vary with age, sex, genetic, and cultural background. Obesity also increases the likelihood of certain diseases and other health problems. The video below explains more about the obesity epidemic.