In a new study, researchers have asserted that patients with treatment-resistant clinical depression improved significantly within a day or two of being administered with nitrous oxide. The study included 20 patients, who were suffering from depression. They were administered with the laughing gas, and two-thirds of them showed improvement within a day of the process.
However, there was no improvement seen on one third of the participants. Scientists at the Washington University School of Medicine in St. Louis conducted the research.