Jon Brower Minnoch , born September 29,1941, was recorded as the heaviest human being. At the time of weighing, his weight was approximately 1,400 lb i.e. around 635 kilograms. His extreme size, declining health and lack of mobility prevented use of a scale so the figure of his weight was only a close estimation. Jon gained weight at an early age. He weighed 294 lb (around 133 kilograms) at the age of 12 and by the age of 22, he was weighed 392 lb (178 kilograms).

Jon Brower Minnoch

Due to cardiac and respiratory failure at the age of 36, minnoch's weight continued to increase steadily until his hospitalization in march 1978. In the same year when he married his 50 kg wife Jeannette, he broke a record for the greatest difference in weight between a married couple. He fathered two children. Endocrinologist Dr. Robert Schwartz estimated that over 900lb of his overall body mass was retained fluid.

Transportation for Minnoch was extremely difficult. It required over a dozen firemen and rescue personnel, a specially modified stretcher, and a ferry boat to transport him to University of Washington Medical Center in Seattle. There, he was placed on two beds pushed together, and it took 13 people to simply roll him over for linen changes. In the University of Washington Medical Center in Seattle, Minnoch was put on a strict diet of 1200 kcal per day and he was discharged from the hospital after 16 months. At the time of his discharge from the hospital, he weighed 476 lb (216 kg). He lost approximately 924 lb (419 kg). It was the largest human weight loss ever documented. With his underlying condition of edema being incurable and difficult to treat, the decision was made to discontinue treatment after he was readmitted to the hospital just over a year later in October 1981. His weight increased to 952 lb (432 kg) in this period. He died on September 10, 1983. At the time of his death, he weighed 798 lb (362 kg) with a 105.3 BMI.

His other details are:
Born : September 29, 1941 at Bainbridge Island, Washington, U.S.
Died: September 10, 1983 (aged 41)
Cause of death: Edema
Height: 185 cm (6 ft 1 in)
Weight: 635 kg (1,400 lb) in 1978 (estimate)
Spouse(s): Jeannette (1978–1983; his death)
Children: 2