You’ve probably heard the name Louis Pasteur, the inventor of pasteurization, but unless you’ve taken a class in biology, you may not know the name Antoine Béchamp.  Both were French chemists in the 1800s who had rival theories about bacteria and viruses. Pasteur is famous for the germ theory, the accepted theory amongst science that says we need to fight bacteria and viruses. Béchamp’s theory, the terrain or host theory, says that bacteria and viruses are always going to be around and we need to focus on building our immune systems. Unfortunately, Béchamp’s theory has been rejected by science. Dr. Martin provides a history on the two theories and again emphasizes the importance of vitamin D for a healthy immune system!