Robert,

Car ownership causes cancer?

As far as food you forgot: don't eat preserved meats, or much of any meat really.
And don't drink scalding tea or otherwise expose yourself to repeated burn injuries.

But the biggest one is: Don't get unlucky.
Your chance of getting cancer isn't one percent, even if you do everything right.
Two of my closest relatives were as health-conscious as it gets, and while they were able to avoid a lot of maladies, they both died of cancer (Breast and Acute Myeloid Leukemia).

To you it may just be denial, but there's a bit of victim blaming going on in your self assurance.

It's a well established fact that those populations not living the 'Western' lifestyle, have a much lower cancer incidence. Of course life expectancy for populations with a 'Western' lifestyle is still greater, increasing your statistical chance to get cancer, so it's either/or.

Those able to afford the escape and remain in the 'good life' regions, with all the medical care available, alternate or classic, stand a better chance to get older, just the simple 'living the med cuisine' supposedly adds 5 years. It's though like the big tobacco argument, 'my uncle smoked till he was ninety'. My uncle was lucky, and that's what it is for the most part, working on your odds.