 This study found that hyperbaric oxygen therapy, HBOT, can significantly improve pain, tender points, fatigue, multidimensional function, patient global and sleep disturbance in people with fibromyalgia, FM. Additionally, low pressure, less than 2.0 atmospheric absolute, HBOT appears to be safe and well tolerated, with no serious adverse events or complications being observed. This article was authored by Shinchin Chen, Hui Ma, Mai Jiu, and others.