The brain contains the highest percentage of fat in the human body. It's typically composed of 60% fat, which is primarily in the form of lipids. While water makes up the majority of the brain's weight, lipids are crucial for its structure and function.
Although the brain has the highest fat content, it's important to remember that fat is distributed throughout the body, and the amount of fat in a specific area varies greatly depending on factors like genetics, diet, and exercise.
While the brain is the fattiest organ, the most nutritious part of a human body from a survival standpoint would be the fat pads, which contain the most calories.