In terms of red meat, Mark recently wrote a post about the scare tactics authority uses to direct people away from red meat. Most of the studies are bullshit.
In terms of red meat being acidic, thus providing a breeding ground for cancer, I'd say that sounds like some vegan propaganda. Any evidence backing this assertion up?
Red meat is one of the absolute best foods you can eat. Any food that comes from a pastured animal is going to be stock-full of minerals, nutrients and healthy fats.