The heaviest recorded person in history is Jon Brower Minnoch, an American man who reached a peak weight of approximately 1,400 pounds (635 kilograms) in 1978. His extreme weight was primarily due to a combination of obesity and a medical condition known as congestive heart failure, which caused his body to retain excess fluid. Jon Brower Minnoch struggled with his weight throughout his life, and his condition led to numerous health complications. He was hospitalized multiple times, and in 1978, he was admitted to a hospital where he lost a significant amount of weight, but he remained one of the heaviest individuals ever recorded.