1 Paul Mason
Paul Mason, a 57-year-old man from England was once considered the world's fattest man at 980 lbs. Mason recently underwent gastric bypass surgery and already is down to 560 lbs. He says his 20,000 calorie-a- day diet is what attributed to his extreme size, but he also blames Britain's national health service for not allowing him to see an eating disorder specialist when he was just over 400 lbs. He currently lives in Orange, Massachusetts with his former fiancée Rebecca Mountain.
2 Donna Simpson
Donna Simpson (born 1967) was an American woman who wished to attain a target weight of 1,000 pounds (450 Kg). At age 9, she weighed 184 pounds (83 kg). As of June 2010, Simpson weighed 602 pounds (273 kg), down from her weight of 630 pounds (290 kg) in 2008. During the process, Simpson maintained a website where fans paid to watch her eat. In 2010, she won the Guinness World Records for the "Heaviest woman to give birth." In August 2011, Simpson decided to go on a diet to reduce her weight to a target of 370 pounds (170 kg) in order to become more self-sufficient and be able to do a better job of raising her children.
3 Manuel Uribe
Manuel Uribe was born in Mexico and suffered from morbid obesity. 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 400 lbs. (one-third of his body weight, about 181.8 kg) with the help of doctors and nutritionists, and by following the Zone diet. He was featured on two TV documentaries, one in 2007, “The World’s Heaviest Man” and another in 2009, “The World’s Heaviest Man Gets Married”. He weighed 394 kg when he died on 26 May 2014.
4 Robert Earl Hughes
Robert Earl Hughes, Jr. (June 4, 1926 – July 10, 1958) was an American man who was, during his lifetime, the heaviest human being recorded in the history of the world. Hughes’ excessive weight attributed to a malfunctioning pituitary gland. His chest measured at 3.15 metres (10.3 ft), and he weighed an estimated 486 kilos (1,070 lb) at his heaviest. At the age of six, he weighed regarding 92 kilos (200 lb); at 10, he weighed 171 kilos (380 lb). By the time of his death, he weighed over half a ton.
5 Carol Ann Yagar
Carol Ann Yager (January 26, 1960–July 18, 1994) was once regarded as the fattest woman in the world as she weighed about 544 kg. She developed a severe eating disorder when she was a child after she was sexually abused and molested by a family member. She spent the major part of her life living in Beecher, a town of Michigan located in Mount Morris Township. She is also known for loosing most of her weight by natural methods and lost 236 kg weight in three months without any surgery. She eventually died of kidney failure.