A Glasgow man has seen his feet jump three sizes as part of a series of bizarre side effects resulting from treatment for a brain tumour.

Jay Cramb weighed 15 stone before going under the knife for surgery just above the pituitary gland after being diagnosed with a craniopharyngioma tumour in 2015.

Jay, 42, later underwent radiotherapy to battle the aggressive illness, but the treatment provoked a devastating effect on his hormone production, prompting him to gain an additional ten stone.

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It also aggravated a rapid growth in Jay’s feet, with his shoe size swelling from a 12 to a 15 - with medics warning the process would never reverse.

The sports therapist spoke out about living with the condition as he launched a fundraising appeal for the Brain Tumour Research charity in an effort to support others experiencing similar effects.

He told the Evening Times: “This type of low-grade brain tumour occurs above the pituitary gland and often has a profound effect on a patient’s hormones. I have to take a mountain of medicines, which have resulted in me adding half my bodyweight and my feet increasing to a size 15, making it difficult to find shoes that fit.”

“I regularly have endocrine appointments to try and get the dosage levels right and I have to admit that although I am normally a gregarious and very positive person, I do have some quiet, dark moments now and again.”

Craniopharyngioma tumours develop in the hypothalamus area of the brain and are most commonly discovered in children and young people.

Glasgow Times: Jay Cramb is a keen rock climber and usually treats patients who have suffered injuries while taking part in extreme sportsJay Cramb is a keen rock climber and usually treats patients who have suffered injuries while taking part in extreme sports

However, the condition can be found in adults like Jay, who was in his late thirties when he was first diagnosed.

Keen rock climber Jay is hoping to raise funds for research into the disease by hosting a prize draw through crowdfunding website JustGiving - with entrants able to win up to six months of free sports and remedial massage sessions.

He added: “I was shocked to discover that brain tumours are the biggest cancer killer of children and adults under 40, yet just one per cent of the national spend on cancer research has been allocated to this devastating disease.”

“I usually treat outdoor and extreme sports enthusiasts in particular, but I wouldn’t refuse anyone who was in pain.

“Every £5 donated to the charity entitles you to one ticket, so if you donate £50 you will get 10 tickets and 10 chances to win a prize or prizes.”

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Craniopharyngioma tumours account for just one to three per cent of those found in adults and less than 15 per cent of those found in young people.

Joe Woollcott, community fundraising manager at Brain Tumour Research for Scotland and N Ireland, said: “Jay’s story reminds us that brain tumours are indiscriminate; they can affect anyone at any age.”

“What’s more, less than 20 per cent of those diagnosed with a brain tumour survive beyond five years compared with an average of 50 per cent across all cancers, and we cannot allow this desperate situation to continue.”