you might want to cool off a little bit with posting a bunch of claims that are dangerous. Animal studies have shown a moderate overdose can cause liver cancer. 1mg per day safe dose. That's what Ray said. Not that hard to find out what Ray said about Biotin. He saw good things happen with it and then the animal studies in the 50's about liver cancer seemed to have spooked him. So the studies must have been pretty legit I am guessing.