Jon Brower Minnoch was an American man who, at his greatest weight of 1,400 lb, was the heaviest person ever being documented. Minnoch weighed 294 pounds at the age of 12 and stood 5 feet 7 inches (170 cm) tall. By the age of 22, he was 6 feet 1 inch (185 cm) tall and weighed 500 pounds. More @Wikipedia
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