There is no definitive answer to this question as it depends on a number of factors, including an individual’s body type and composition. However, generally speaking, the fattest organ in human body is thought to be the liver. This is because the liver contains a high amount of triglycerides (a type of fat), which can make up to 10% of its weight. In addition, the liver also stores glycogen (a sugar that can be converted into glucose), which can account for another 2-5% of its weight.
