Cancer comes "no matter how perfect the environment", according to co-author Dr Bert Vogelstein, also from the Johns Hopkins Kimmel Cancer Center.
Prostate, brain and bone cancers are 95% caused by mutations due to random DNA copying errors. And the copy problem leads to 77% of pancreatic cancers.
In fact, 66% of all cancers come from copying errors, 29% from lifestyle or environmental factors, and just 5% from inherited faulty genes.
Dirty Harry said it best, ‘You've got to ask yourself one question. Do I feel lucky? Well, do ya, punk?’