How fat can a person actually be?
I'm working on a story where one of the characters is obese and housebound, but I need some real medical facts as to how big someone can be before they can't walk.
The character is a female in her early fifties and so far I've made her about 60 stone / 840 pounds. I've been able to research the medical conditions and physical problems that come with morbid obesity, but am having trouble finding any real-life case studies.
So, does anyone have medical knowledge in this area? Is 840 lbs too fat to walk? Would it be possible for them to survive without 24 hour nursing supervision? If anybody has any useful information or links to some good sites, I would be very greatful. Ta.