is it healthier to eat no meat?

[FlatAssembler]

As far as I understand it, it is widely agreed that around 7% of cancers are caused by heme iron. That's why vegetarians, once you control for factors such as smoking, have around 7% less chance of getting cancer.

‘As far as [you] understand it.’  ‘Nuff said.

Boru

If what you are saying were true, vegetarians would have higher risk of getting cancer. But the evidence is clear that they have lower.