Stuart Kelly’s final interview with Iain Banks us up on The Guardian, and Banks’ thoughts on the cause of his cancer:
As we walk to the door, Banks pulls one final, left-field surprise. “Do you know that I know what caused the cancer? …cosmic ray,” he says. “I won’t brook any contradiction; it was a high-energy particle. A star exploded hundreds or thousands of years ago and ever since there’s been a cosmic ray – a bad-magic bullet with my name on it, to quote Ken – heading towards the moment where it hit one of my cells and mutated it. That’s an SF author’s way to bow out; none of this banal transcription error stuff.