“I didn't have any major symptoms, so if you feel something isn't right, no matter how small, please don't put it off - please go and get checked, as it could save your life.
Gallagher, the former trainer of ex-world champs Scott Quigg, Liam Smith and Anthony Crolla, is getting through the biggest fight of his life thanks to the help of his nearest and dearest.
He said: "I know I have to prioritise my health at this time, yet boxing is giving me that bit of escapism I need right now.
"I would like to say no matter how busy life gets, your health should always come first.
"We can overlook things and put things off because we're always so 'busy', but ultimately there's nothing more important than your health.
