Obesity is a medical condition in which excess body fat has accumulated to the extent that it may have a negative effect on health, leading to reduced life expectancy and/or increased health problems. Because obesity is a leading preventable cause of death worldwide, with increasing rates in adults and children, Authorities view it as one of the most serious public health problems of the 21st century. And in 2013, the American Medical Association classified obesity as a disease. Fat Reduction can be treated with Laser.