Dr. David L. Grimes is a board-certified physician, former U.S. Air Force officer, and Lifetime Fellow of the American College of Obstetricians and Gynecologists (FACOG). With decades of experience in clinical medicine, medical education, and preventive health, Dr. Grimes is on a mission to help everyday people protect their health through evidence-based medicine. He is the author of multiple books on osteoporosis prevention, bone health, and the science of vitamins D3 and K2