That isn't true. There are causal links between meat and cancer. You have: IGF1, saturated fat, sulphar-based animo acids like methionine, mycobacterial load, oxidative stress, purification in the intestine and more recently, that nuXX sugar found in protein.

Did you read my comment?

I didn't deny causal links between meat and cancer. I denied that the causal links between meat and cancer caused anything close to as much additional total cancer risk as smoking does. That's a viewpoint that is supported by any credible source you care to name.

Vegetarians still consume proteins from animals like casein and cholesterol from eggs. There have been a lot of studies connecting casein to cancer as well (when protein intake is over 7% from calories).