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Gavin, who weighs 31 and a half stone and hasn't left his house in 18 months says he's struggled with his weight since puberty,

"I've gone from walking four or five miles a day, playing Sunday League Football, being really active to not being able to walk around my flat without being in pain, out of breath and really really struggling. I struggle to get out of bed, I struggle to get to the sofa in the living room which is only 15 or 20 steps away."

Speaking to 5 Live's Afternoon Edition, Gavin says that "people often laughed at the way I looked and that just made things worse".

This clip is originally from 5 live Afternoon Edition Monday 19th September 2016.