A patient who lost almost eight stone after having a gastric bypass operation said he feels it has given him another 20 years of life.
Peter Wright, 55, slowly put on weight over the years as he stopped exercising due to an injury, then went through the trauma of losing his wife to cancer.
He reached almost 20 stone, developed Type 2 diabetes and asthma, and was looking to have two knee replacement operations.
Repeated attempts to control his weight through diet failed, until four years ago he asked his doctor to put him forward for weight-loss surgery.
The results of the operation in Sunderland were life-changing.
Mr Wright, who works in environmental health, said: "My diabetes immediately disappeared and I no longer needed medication, my blood pressure went down to a normal level, amazingly I no longer needed surgery for my knees and I'm on much less medication for my asthma, even the woolly headed feeling I suffered went away.
"The day after surgery I felt like I could live another 20 years."
Post-operation, he has had to cut down on his portion sizes.
Peter, from Gateshead, said: "It took a lot of self discipline and hurts if you eat too much.
"The surgery throws many different aspects of a new lifestyle at you, but I couldn't contemplate going back to that 20-stone man.
"I would recommend surgery to anyone."