I wonder that too, 20,000 calories worth of food is a HUGE amount. That is about 8 pounds of bacon. I even saw one show where a person had a rig where he fashioned a pully and bucket system out his high rise window where he would hoist down money and a list and his friend would bring him food and hoist it back up.
It is also 125lbs of broccoli
I saw that show, too. He was in Mexico. Used to live in California where he porked up eating fast food. His girl friend was pretty and small and her family was against her relationship with him. She would wash him in bed - a major undertaking and they showed part of that. Disturbing.
I remember a scene where doctors had to clear him for his first trip out of his place in years. He was loaded in the back of a truck with lots of help but the vehicle had to turn around and take him back after an almost accident caused his blood pressure to rise. His mother and other relatives cooked for him in shifts - all frying stuff with heavy grease before the diet. What a situation. Just ghastly. Wanted to turn it off but had to know how it ended.
I believe I read sometime later that he had died despite all the efforts by him and a bunch of other people to get his weight off.