Modern people generally have excess belly fat due to the ready availability of convenience foods and overeating. The benefit of transportation also leads to people walking and exercising less.
Obesity is usually measured according to the body mass index (BMI): BMI = weight (kg) / height ² (m²). Those with BMI greater than 28, are considered obese and those between 24 and 28 are considered overweight. If no obvious cause can be found for excess weight, it is called “simple obesity,” which accounts for about 95 percent of the obese population. Those with clear causes are called “secondary obesity.”
