Researchers at the University of Minnesota have discovered that a special bile found in large quantities in the gall bladders of black bears can reduce damage caused by strokes and possibly other brain afflictions. Black bear gall bladder is enriched in urso-dioxy-cholic acid. Humans have the acid as well, although in very small quantities. Professor of Medicine, Dr. Clifford Steer, says the acid basically protects brain cells. He says the study confirmed what some ancient cultures already knew about black bear bile.