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Laughing gas, or nitrous oxide, improves the symptoms of severe depression, according to a new pilot study.
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The research, conducted at Washington University School of Medicine in St. Louis, is believed to be the first ever to give laughing gas to people with depression.
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Of the 20 patients with treatment-resistant depression in the study, two-thirds were significantly improved after inhaling nitrous oxide, while only one-third improved after breathing a placebo gas.
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