Guinness World Records identifies Jon Brower Minnoch (1941-1983) as the heaviest person in medical history. Minnoch’s top weight in March 1978 was 1,400 pounds (635 kg).
A normal body mass index (BMI) is between 18.5 and 24.9. Those with a BMI of 25-29.9 are considered overweight, and those over 30.0 are considered obese. With a height of 6 foot, one inch (185 cm), Minnoch’s BMI was 184.7.
When Minnoch’s weight necessitated treatment for cardiac and respiratory failure, it took a dozen firemen and an improvised stretcher to move him from his home to a ferry-boat. When he arrived at the hospital, saturated with fluid and suffering from heart and respiratory failure, he was put in two beds lashed together. It took 13 people just to roll him over.
Minnoch’s wife, Jeannette, reportedly weighed 110. They had two children together.Their difference in weight also earned another world record for the greatest difference in weight between a married couple.
Doctors were able to get his weight down to 476 lbs (216 kg) after nearly two years at on a 1,200 calorie/day diet, earning another achievement of the largest weight gain ever recorded (924 lbs / 419 kg). One year later his weight had climbed back to 952 lbs (432 kg).
His condition was diagnosed as a generalized endema — an abnormal accumulation of fluids. Since the condition was incurable, Minnoch made the decision to forego further treatment and died on September 10, 1983 at the age of 41 years. He was 798 lbs (362 kg) at the time of his death.