A 25-year-old man has blamed the council for his 40 stone bulk - because he cannot fit through his front door to go for a jog.

Chris Leppard, whose Prader Willi Syndrome forces him to binge 5,000 calories-a-day because he never feels full, has ballooned after getting too big to squeeze through the door.

Now he is begging council bosses to finance a new entrance to his house or move him to a bungalow so he can get outside to exercise.

Chris, who was sectioned under the Mental Health Act in 2003 over his weight, has not been able to move from his armchair for six months and last year was warned by doctors his legs might be amputated after he piled on another 15 stone.

Speaking from the home he shares with mum Anne in Hastings, he said: "I cannot get out of the door and I definitely cannot get up the stairs to get outside.

"I get really upset about it because I am trying so hard to lose the weight - but this has been a major step back for me."

The wannabe chef did manage to shed nine stone last year but after an infection left him bed-ridden again, feasting on fry-ups, burgers and biscuits led him to pile on 15 stone more.

He now weighs in at 40 stone and if he doesn't manage to fight the weight, doctors fear he will not live passed his 30s.

He added: "At the height of my illness I'd have 5,000 calories a day and mum was spending £9,000-a-year on my food alone.

"But two years ago nutrition experts put me on a strict diet and exercise regime - I loved going to the gym and was making real progress.

"I still stick to my diet and have been trying really hard.

"I have cereal and toast in the mornings for my breakfast and then for lunch I have spaghetti on toast, which is one of my favourites, and in the evenings mum cooks me a healthy evening meal.

"I have cut right back on my eating and feel I am doing really well - but because I cannot exercise and because I am retaining a lot of water because of one of my infections I have still put on weight.

"Now I spend my life in my armchair.

"I am forced to eat, drink and sleep in my chair because I cannot make it upstairs to my bedroom.

"I have been asking the council to move me to a bungalow with wider doors so I can at least make it outside - but they won't move us. It is so frustrating and upsetting.

"I am at my wits end.

"I have got a mobility scooter outside but I cannot get out there to use it."

Mum Anne, 51, is her son's full-time carer and says that despite regular calls to the council and pleas for a change of home they have heard nothing and claims she is growing increasingly concerned about her son's well-being.

She said: "I am scared for him. He finds it so upsetting because he has tried so hard."

A spokeswoman for Hastings Borough Council said: "We continue to work closely with the family and fully appreciate the problems they are facing.

"Unfortunately, there is a real shortage of specialist housing in Hastings, such as the kind they are waiting for but we will continue trying to help as best we can.

"There are grants that can be obtained to adapt houses and flats and this might be something we can advise them on."