Mental Health DailyResearch. Evidence. Perspective.Published research on circadian rhythm.
A 2025 iScience study found that nighttime caffeine increased motor impulsivity in Drosophila, with dose-dependent loss-of-inhibition events across n = 30-32 flies per behavioral condition a…
Read articlePopular coverage of chronotype neuroimaging usually claims that late chronotypes (evening types, often called “night owls”) show smaller cortical regions and faster brain aging than early ch…
Read articleA 2026 multi-ancestry genome-wide association study of urinary aMT6s, a melatonin metabolite used as a proxy for overnight melatonin secretion, found 0 genome-wide significant loci in 11,744…
Read articleA 2026 male-mouse study found that 30 mg/kg dexamethasone for 5 days increased light-phase wakefulness (t13 = 4.122, p = 0.0012), decreased NREM sleep (t13 = 4.412, p = 0.0007), and amplifie…
Read articleCircadian rhythms, the natural cycles of physiological and behavioral processes occurring within a 24-hour period, play a crucial role in our overall well-being. Recent research highlights t…
Read articleThe extreme environment of spaceflight induces a myriad of stresses on astronauts – and these stresses may negatively impact mental health, neuroplasticity, and cognitive abilities. New rese…
Read articleInsomnia is considered a sleep disorder characterized by an inability to fall asleep or stay asleep throughout the night. There are many different types of insomnia, some of which are short-…
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