When Jonathan Plummer, 41, began to battle a “constant” thirst that he could not quench, his medical doctors put this symptom right down to diabetes at first.

The blood sugar situation is characterised by tell-tale indicators, together with being very thirsty.

However, when his diabetes check outcomes got here again destructive, the medics have been baffled.

In truth, the postman’s thirst was triggered by a brain tumour positioned in his pituitary gland.

The pea-sized a part of the mind helps to manage the sense of thirst, telling you to drink when it detects you're getting dehydrated.

Due to the tumour, Jonathan’s system went haywire and was prompting him to drink about 10 litres of water every day.

The 41-year-old, from Falmouth in Cornwall, stated: “I felt a constant thirst that I couldn't quench and got to the point where I was passing as much water as I was drinking.

“It was an awful time which caused me to miss days of work at a time and I experienced extreme fatigue.”

The tumour was detected solely when he went for a routine eye test in 2002.

He was then referred to Derriford Hospital for an MRI scan, which revealed that he had a germ cell tumour.

While a majority of these tumours develop within the physique's germ cells, that are normally positioned within the ovaries or testicles, they will generally be present in different components of the physique, such because the mind.

Following the devastating analysis, Jonathan needed to endure 30 rounds of radiotherapy and steroid remedy as a part of his therapy.

Unfortunately, the uncomfortable side effects prompted him to pile on weight, going from 12st to 18st.

The good news is that he's now tumour-free however the therapy left him unable to play rugby and cricket, one thing he loved earlier than. 

Instead, he has taken up working and swimming which helped him regain management of his weight.

Jonathan is now decided to boost cash for the charity Brain Tumour Research by way of a sponsored skydive.

Mel Tiley, group improvement supervisor on the charity, stated: 'We're grateful to Jonathan for sharing his story and it is fantastic to listen to how he has discovered positivity after his brain tumour analysis.

“His story reminds us that brain tumours are indiscriminate; they can affect anyone at any age.

“We're determined to change this but it's only by working together that we will be able to improve treatment options for patients and, ultimately, find a cure.”