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Low doses of "laughing gas" could be fast, effective treatment for severe depression

A new study found that a one-hour inhalation session with 25% nitrous oxide gas improved depression symptoms for over two weeks, with fewer adverse side effects compared to higher concentrations. The effects were nearly as effective as 50% nitrous oxide at rapidly relieving symptoms of treatment-resistant depression.

SourceUniversity of Chicago Medical Center·JournalScience Translational Medicine·DateJun 9, 2021

Lower and safer doses of laughing gas relieve treatment-resistant depression in phase 2 trial

A phase 2 trial found that a single one-hour treatment with nitrous oxide can relieve symptoms of treatment-resistant depression for several weeks. The study showed significant improvements in depression symptoms, with a four-fold lower risk of adverse effects at lower concentrations.

SourceAmerican Association for the Advancement of Science (AAAS)·JournalScience Translational Medicine·DateJun 9, 2021

Earlier sleep timing associated with lower depression risk, new study suggests

A large genetic study suggests that going to bed earlier may be associated with a lower risk of major depression. The study found that one-hour earlier sleep timing corresponded to a 23% lower likelihood of having a major depressive disorder. Further research is needed to understand the mechanisms behind this effect and how shifting sl...

SourceUniversity of Colorado at Boulder·JournalJAMA Psychiatry·DateMay 28, 2021

Magic mushroom compound performs at least as well as leading antidepressant in small study

In a small study, psilocybin, the active compound in magic mushrooms, was found to be at least as effective as a leading antidepressant medication in reducing depressive symptoms. The results showed that depression scores decreased more quickly and were greater in magnitude in the psilocybin group compared to the escitalopram group.

SourceImperial College London·JournalNew England Journal of Medicine·DateApr 14, 2021

Accelerated cellular aging associated with mortality seen in depressed individuals

A study found that cells from people with major depressive disorder (MDD) have accelerated DNA methylation clocks, indicating an increased risk of mortality. The researchers discovered that these changes persisted even after accounting for lifestyle factors, suggesting a potential biological mechanism underlying the condition.

SourceWalter Reed Army Institute of Research·JournalTranslational Psychiatry·DateApr 8, 2021

Supportive partners protect relationship quality in people with depression or stress

A new study by UMass Amherst researchers found that couples where one partner is responsive and supportive can maintain better relationship quality despite the other's depression or external stress. The study involved over 200 newlywed couples and found that responsiveness was associated with improved relationship outcomes.

SourceUniversity of Massachusetts Amherst·JournalSocial Psychological and Personality Science·DateApr 8, 2021

Exposure to harmful chemicals in plastic may contribute to postpartum depression

A small study found that exposure to phthalates and bisphenols, commonly found in plastics, may contribute to lower progesterone levels during pregnancy and an increased likelihood of developing postpartum depression. Reducing exposure to these chemicals could be a potential avenue for preventing postpartum depression.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateApr 1, 2021

Depression affects visual perception

Researchers at the University of Helsinki found that depression alters the way the brain processes visual information, with depressed individuals perceiving contrast as stronger. The study used two visual tests to compare brain function in patients with depression to those without.

SourceUniversity of Helsinki·JournalJournal of Psychiatry and Neuroscience·DateMar 29, 2021