Sleep

Could a bit of morning sunlight be the secret to waking up refreshed? A new study suggests the timing of natural light exposure may make all the difference.

Nightmares often follow a night of disrupted sleep, according to new research—but having a nightmare doesn’t necessarily cause worse sleep afterward.

Sleep and addiction are deeply intertwined, and new research suggests that disrupted circadian rhythms may drive opioid dependence.

Spending more time on screens after bedtime is associated with shorter sleep and a higher chance of insomnia, researchers report.

New findings suggest that sleep problems may be the missing link between chronic diseases and depression, shedding light on an important yet overlooked factor in mental health.

A lack of sleep may do more than make teens groggy—it could contribute to anxiety, depression, and eating disorders through the cycle of repetitive negative thinking.

A recent study in China produced unusual findings about the relationship between physical activity and sleep quality in university students, particularly those with insomnia.

A six-hour sleep disruption in mice weakened fear memory consolidation and increased brain-derived neurotrophic factor mRNA levels.

A recent study published in Acta Psychologica examined the relationship between TikTok use and various aspects of well-being among young people.

Youths with childhood maltreatment—particularly emotional and sexual abuse—experience more sleep problems, mediated by impaired emotion regulation strategies, such as reduced cognitive reappraisal and increased expressive suppression.

New research reveals that disrupted sleep may be the hidden link between heavy cannabis use and memory deficits, unmasking an unexpected culprit behind cognitive impairments.

A study of adolescents found that greater daytime light exposure was associated with earlier bedtimes and wake times. More intense morning light had a stronger impact. The teens' average sleep was still insufficient

A nap, especially one that includes REM sleep, helps people solve problems they previously struggled with. Sleep enhances problem-solving by improving the ability to recognize hidden connections between related problems.

Norepinephrine-driven oscillations during non-REM sleep power the brain's glymphatic system to clear toxic proteins, but the sleep aid zolpidem disrupts this process, impairing waste clearance and potentially increasing neurodegenerative disease risk.

Astronauts sleep less and wake more in space, with REM sleep initially decreasing but recovering over time at the expense of NREM sleep.