[DanBC]

So this tells us how certain we are that they cause cancer. And we are certain that red meat causes cancer, and we are certain that smoking causes cancer.

This ranking does not tell us how much cancer is caused. We know that there is a low risk of colon cancer, and that eating red meat will increase that risk by about 15 to 20%. This ends up at a very low risk.

Cigarettes massively increase the risk of lung cancer. (And other cancers).