is it healthier to eat no meat?

[FlatAssembler]

What do you think is that I believe that isn't strictly true? That ingesting heme iron significantly increases your chances of getting colon cancer? That seems to both be based on evidence and be a scientific consensus. You may argue it is less certain than, for example, saturated fat causing heart disease (because that's the theory that statins are based on, and medicine is a harder science than nutritional science), but it's about as certain as nutritional science by itself can get.

[Bold mine]

Two tenths of one percent.

Boru

Then why do vegetarians, once you adjust for factors such as smoking, have around 7% less chance of getting cancer? If what you are saying were true, the effect would not be detectable by epidemiological studies, but it clearly is.