Prolonged exposure to microgravity experienced by astronauts in space is known to cause low back pain and a heightened risk of intervertebral disc herniations following space flight. Jeff Lotz, Professor, Vice Chair for Research, UCSF Orthopaedic Surgery, discusses what has been learned about back pain and spinal degeneration. Series: "Mini Medical School for the Public" [Health and Medicine] [Science] [Show ID: 37079]