Science Daily (www.sciencedaily.com) presented details from a study published in Molecular Psychiatry on March 5, 2026. From the article: "Major depressive disorder (MDD) is a major global health problem and one of the leading causes of disability. About 30% of people diagnosed with depression develop treatment-resistant depression (TRD), meaning their symptoms do not improve sufficiently with standard antidepressant medications. Ketamine has gained attention as a fast-acting