He was forced to undergo stomach removal surgery last year after being diagnosed with the rare cancer-causing mutation, CDH1.
And Stan Walker has revealed that without his mother's persistent nagging he would probably not be alive.
The Australian Idol winner, 27, told Who on Thursday: 'If I hadn't done the operation, I would for sure be dead by now!'
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'If I hadn't done the operation, I would be dead by now': Australian Idol's Stan Walker has revealed his stomach removal surgery was a matter of life or death
Stan initially fought with his mother to do the inconvenient test - which he had to fly to Melbourne for - but after her consistent pleading he obliged.
His mother April was concerned because the rare cancer-causing mutation is hereditary and has reportedly caused the deaths of more than 25 members of their family.
The New Zealand-based singer said his mother called him in tears a week later with the devastating news - and Stan claimed they both reacted with laughter.
'I was like, "that's trippy", and we both started laughing. I mean not because it was funny - but what else can you do? It's such a grim thing,' Stan explained.
'What else can you do? It's such a grim thing': The New Zealand star said his mother called him in tears with the devastating health news, with Stan admitting they both laughed
'In a way, (the film) was how I processed this': Stan chose to keep his surgery and recovery under wraps,