Here are some very damning studies done that are categorized into free radicals found only in meat, eggs, dairy, fish and not in vegetables and fruit. All of which have no essential dietary purpose that plants do not fill in for optimal health.
Misc mechanistic data directed towards vegetarians/vegans. Keep in mind its from 2010 but even 7 years ago it was thought to be a 12% lowered risk from overall cancer. Now some estimates are as high as 50%. And with specific types of meat its as high as 70% lowered risk if you dont consume it. https://www.ncbi.nlm.nih.go......