Andreas Michalsen, MD, PhD is professor of clinical complementary medicine at the Charité University Medical Center Berlin, the largest university hospital in Europe. He is also head of the department of internal and complementary medicine at Immanuel Hospital Berlin. Dr. Michalsen is board-certified in internal medicine, emergency medicine, nutritional medicine, and physical medicine and rehabilitation. He has published over 200 scientific articles in top medical journals and has collaborated with Stanford University, Harvard University, USC, the Mayo Clinic, and many other institutions.