This is a list of the heaviest people recorded and it is limited to those individuals who weighed over 450 kg (990 lb; 71 st).
Mills Darden (October 7, 1799 – January 23, 1857) is alleged to have been one of the largest men in history. He was widely reported to have stood approximately 7 feet 6 inches (2.29 m) tall and is said to have weighed around 1,000 to 1,100 pounds (450 to 500 kg) at his heaviest. If the reported figures are correct, Darden was 30 percent taller and about six times as heavy as the average American male of the 21st-century.
Kenneth Brumley (born 1968) is one of the heaviest people ever recorded, whose weight was confirmed. He was featured on the Channel 4 BodyShock documentary "Half Ton Dad", as a father of four, who weighed almost 1,035 pounds (468 kg). According to Kenneth Brumley's statements in the documentary, he had been bed-bound for four years. After he was accepted as a gastric bypass patient at the Renaissance Hospital in Houston, a fire crew had to hammer down a wall in Brumley’s house to get him out. At Renaissance Hospital, Brumley was treated by the specialist team that treated Renee Williams, believed to have been the world's heaviest woman at the time. The first step in Brumley's treatment was a diet restricted to 1200 calories per day, which made him lose 167.5 pounds (76 kg) in only 40 days.
Mayra Rosales from United States (1980), one of the world fattest woman (470 kg (1,000 lb; 74 st)) was accused of murdering her sister's son - but walked free after court heard she was 'too big to kill'.
Robert Earl Hughes
Robert Earl Hughes (4 June 1926 – 10 July 1958) was, during his lifetime, the heaviest human being recorded in the history of the world. Hughes' excessive weight was attributed to a malfunctioning pituitary gland. His chest was measured at 3.15 metres (10.3 ft), and he weighed an estimated 486 kilograms (1,070 lb) at his heaviest. At the age of six, he weighed about 92 kilograms (200 lb); at ten, he weighed 171 kilograms (380 lb). By the time of his death, he weighed over half a ton.
Patrick D. Deuel
Patrick D. Deuel (born 28 March 1962), was one of the heaviest people in the world. He was the subject of the documentary "Half Ton Man" in Channel Four's Body Shock series, in which Rosalie Bradford gave advice after achieving a record-breaking weight loss of 410 kilograms (900 lb). At one point, he had not left his house (in Valentine), or even his bed, in 7 years. He stands at 177.5 cm (5 ft 10 in). At his peak he weighed 1,126 pounds; at the time, the only scale that could be used to weigh him was a livestock scale. Gastric bypass surgery was thought to be his best chance for permanent weight loss. A second operation removed a mass of fat and skin hanging from his midsection. After 12 months, Patrick lost 260 kilograms (570 lb). After leaving the hospital, Patrick lost even more weight, reaching 170 kilograms (370 lb), a notable 318 kilograms (700 lb) loss.
Michael Hebranko (born May 14, 1953) is a person suffering from an extreme case of morbid obesity, known to be among the heaviest people in the world. After a stay at the St. Luke’s Hospital in New York, he dropped his weight from 411 kg (910 lb) to 90 kg (200 lb) and waist size from 290 cm (110 in) to 91 cm (36 in) in 19 months with the help of the dieting and exercise coach Richard Simmons and was recorded in the Guinness Book of World Records for the highest recorded weight loss in 1990. He lost some of this weight from surgical removal of fat. However, over the next seven years, his weight increased to 453 kg (1,000 lb) and he had to be repeatedly hospitalized to the Brookhaven Rehabilitation and Health Care Center. In June 1999, Hebranko was at his peak weight of 500 kg (1,100 lb). As of March 2012, he now resides in Staten Island, New York and weighs 550 lbs.
Rosalie Bradford (August 27, 1943 – November 29, 2006) holds the Guinness World Record for most weight lost by a woman. (b. 1944) of Sellersville, PA; 5 ft 6 in, measured at 1053 lbs, but estimates that she weighed more than 1200 lbs at her peak two years earlier, a claim accepted by Guinness. After being treated for symptoms of heart failure, she was eventually persuaded by Richard Simmons to embark on a five year diet, an experience she described as hellish. Tortured by hunger, she got down to under 300 pounds, setting a world's record for weight loss.
Walter Hudson (c. 1944 in Brooklyn, NY – Dec 24, 1991) of Hempstead, New York was the fourth most obese human in medical history. He also holds the Guinness World Record for the largest waist. It measured 119 inches (300 cm) in 1987 when he was at his peak weight of 1,197 pounds (85.5 st; 543 kg). Hudson described his average daily diet as consisting of two boxes of sausages, 1 pound (0.45 kg) of bacon, 12 eggs, a loaf of bread, four hamburgers and four double cheeseburgers, eight large portions of fries, three ham steaks or two chickens, four baked potatoes, four sweet potatoes, four heads of broccoli, most of a large cake, and additional snacks. He also drank an average of 18 US quarts (17 liters) of soda every day.
Carol Ann Yager
Carol Ann Yager (1960-1994) holds the distinction of having been one of the most severely obese people in medical history estimated to have weighed more than 1600 lbs at her peak. She had been fat since childhood. In 1993, she was measured at 1189 lbs when admitted to Hurley Medical Center, suffering from cellulitis. She lost nearly 500 lbs on a 1200-calorie diet, but most of that weight was thought to be fluid, and she regained all of it and more soon after being discharged. Yager died in 1994 at the age of 34, she weighed about 1200 lbs (544 kg), and was 5' 7" (170 cm) in height. Yager is or was perhaps more notable for having lost the most weight by natural (non-surgical) means, in the shortest documented time (521 lbs. in three months).
Manuel Uribe (born June 11, 1965) is a man from Monterrey, Nuevo León, Mexico, notable for suffering from morbid obesity to one of the greatest extents known in recorded history. After reaching a peak weight of around 597 kg (1,320 lb) and having been unable to leave his bed since 2001, Uribe lost approximately 181 kg (400 lb) (one third of his body weight) with the help of doctors and nutritionists, and by following the Zone diet. Uribe drew worldwide attention when he appeared on the Televisa television network in January 2006, but turned down offers for gastric bypass surgery in Italy. By October 26, 2008, Uribe had reduced his weight to 360 kg (790 lb). His efforts to overcome the disease continue. As of February 2012, he weighs 200 kg (440 lb).
Jon Brower Minnoch
Jon Brower Minnoch (29 September 1941 – 10 September 1983) was an American man who, at his peak weight, was the heaviest human being ever recorded, weighing approximately 1400 lb (634 kg, 100 stone). This figure was only a close estimation, however, because his extreme size, poor health, and lack of mobility prevented use of a scale. He was discharged from the hospital after 16 months on a strict diet of 1,200 calories per day. He weighed 476 lb (215 kg), having lost approximately 924 lb (419 kg) - the largest human weight loss ever documented. However, he was readmitted to the hospital just over a year later in October 1981, after his weight increased to 952 lbs (432 kg). With his underlying condition of edema being incurable and difficult to treat, the decision was made to discontinue treatment, and he died 23 months later on September 10, 1983, aged 41. At the time of his death, he weighed 798 lbs (362 kg) with a 105.3 BMI.
Source : http://junglemagazine.com