by Cedars-Sinai Medical Center Credit: CC0 Public Domain A new theory suggests irritable bowel syndrome (IBS), the most common gastrointestinal disorder, may be caused by gravity. Brennan Spiegel, MD, MSHS, director of Health Services Research at Cedars-Sinai and author of the hypothesis, explains that IBS—and many other conditions—could result from the body’s inability to manage gravity....