Hyperbaric oxygen therapy (HBOT) is known for treating decompression sickness in divers, but recent studies show it can also help heal brain injuries. A clinical trial found positive results for patients with traumatic brain injuries (TBI) and post-traumatic stress disorder (PTSD). This therapy has shown effectiveness in reducing symptoms and helping over 31,000 patients recover, including many veterans. As more research supports its benefits, HBOT may become a vital treatment option.