I hear things like 5% of vegetarians get colon cancer and 6% of meat eaters and people say theres not much difference, but i think that's not a good way to look at it. A small increase in risk for a specific type of cancer from a specific type of food is not trivial, given the millions of other ways there are to die.
I mean mot wearing a seatbelt might only increase you actual chance of dying in a car crash a couple of percent because you might not ever be in a car crash. It still greatly increases your risk though.
You and I seem to have different definitions for great increases in risk.