As any scientist worth anything will tell you: "Correlation does NOT equal causation." Most likely there is something in the meat that is highly carcinogenic. That something can get there from a variety of ways: how the animal was raised, what it was fed, it's stress levels, how the meat was extracted, how the meat was prepared, how the meat was preserved, how the meat was cooked are all a few options from where then carcinogen may have appeared. My personal opinion is that how livestock is raised has a significant impact on how carcinogenic their meat is. This is easily testable as well. Any organization trying to spin in this to their advantage is really at fault. Their focus should be on making the population more aware and vigilant of their own bodies. Early detection and prevention does wonders from saving you from any disease. PETA is only right in advocating for the better treatment of livestock animals. Livestock is raised in horrific ways nowadays, often time with the person raising the livestock having no option due to corporate rules/lobbying/set up. It is rather dreary. The best we can do as consumers is be smart shoppers and make informed purchases. Don't stop eating meat. We're predators, we didn't evolve front facing high fidelity colour binocular vision to look good; we evolved it to hunt other animals and eat them.