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Obesity is a disease by itself affecting the heart- video presentation-By Dr Harold Gunatillake     Is it a risk factor for heart disease? Transcript: Yes, that is our discussion today. Prevalence of obesity world-wide is becoming an uncontrollable disease and has increased over the last few decades reaching epidemic proportions. There is one exceptional country, the French seem to walk everywhere, and their healthy lifestyle makes them to stay fit. Obesity is defined simply having an excess fat mass in your body The World Health Organization WHO defines obesity as an excess fat mass that negatively affects health. Obesity is measured in body mass index (BMI), which is a person’s weight in kilograms divided by the square of his or her height in meters. A person with a BMI of 30 or more is considered obese. A person with a BMI equal to or more than 25 is considered ...