This is really big. Scientists have discovered that a molecule that is not normally found in humans — but IS found in tumors — comes from milk and red meat. They also found that the human body reacts to this molecule with an immune response. In other words, drinking milk and eating red meat can cause an immune response in humans AND seems to result in this molecule showing up in tumors. Now the question is, does the molecule cause tumors, or is this just a coincidence? Very very big discovery!