This case report followed a 58-year-old woman who had been experiencing cognitive decline for 5 years. After an 8 week course of 40 hyperbaric sessions (1.15 ATA/50 minute sessions), she reported improved memory and concentration, decreased disorientation, less frustration, and her anxiety was gone. These remarkable results were confirmed with brain imaging scans, which showed 6.5-38% improvement in overall brain metabolism <view study>