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Circadian rhythm sleep disorder
Circadian rhythm sleep disorders are a family of sleep disorders affecting the timing of sleep. People with circadian rhythm sleep disorders are unable to sleep and wake at the times required for normal work, school, and social needs. They are generally able to get enough sleep if allowed to sleep and wake at the times dictated by their body clocks. Unless they have another sleep disorder, their sleep is of normal quality. Humans have biological rhythms, known as circadian rhythms, which are controlled by a biological clock and work on a daily time scale. Due to the circadian clock, sleepiness does not continuously increase as time passes. Instead, the drive for sleep follows a cycle, and the body is ready for sleep and for wakefulness at different times of the day.
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Mind & Brain News
February 11, 2026
Feb. 11, 2026 Depression in older adults may sometimes signal the early stages of Parkinson’s disease or Lewy body dementia. Researchers found that depression often appears years before diagnosis and remains ...
Feb. 10, 2026 Human evolution has long been tied to growing brain size, and new research suggests prenatal hormones may have played a surprising role. By studying the relative lengths of index and ring fingers — a clue to oestrogen and testosterone exposure in ...
Feb. 10, 2026 Autism has long been thought of as a condition that mostly affects boys, but a massive study from Sweden suggests that idea may be misleading. Tracking nearly 3 million people over decades, researchers found that while boys are diagnosed more often ...
Feb. 10, 2026 A sweeping new review of ADHD treatments—drawing on more than 200 meta-analyses—cuts through years of mixed messaging and hype. To make sense of it all, researchers have launched an interactive, public website that lets people with ADHD and ...
Feb. 10, 2026 Researchers at the University of Michigan have created an AI system that can interpret brain MRI scans in just seconds, accurately identifying a wide range of neurological conditions and determining which cases need urgent care. Trained on hundreds ...
Feb. 9, 2026 A long-term study found that women who closely followed a Mediterranean diet had a much lower risk of stroke. The strongest benefits were seen in women who ate more plant-based foods, fish, and olive oil while cutting back on red meat and saturated ...
Feb. 8, 2026 A new international study points to a specific brain network as the core driver of Parkinson’s disease. Scientists found that this network becomes overly connected, disrupting not just movement but also thinking and other bodily functions. When ...
Feb. 8, 2026 Scientists have uncovered promising clues that compounds found in Aloe vera could play a role in fighting Alzheimer’s disease. Using advanced computer modeling, researchers discovered that beta-sitosterol—a natural plant compound—strongly ...
Feb. 8, 2026 Scientists have identified a promising new compound, Mic-628, that can reliably shift the body’s internal clock forward—something that’s notoriously hard to do. By targeting a key clock-control protein, Mic-628 jump-starts the gene that sets ...
Feb. 7, 2026 New research suggests the astringent sensation caused by flavanols could act as a direct signal to the brain, triggering effects similar to a mild workout for the nervous system. In mouse experiments, flavanol intake boosted activity, curiosity, ...
Feb. 7, 2026 A major study suggests menopause is linked to changes in brain structure, mental health, and sleep. Brain scans revealed grey matter loss in areas tied to memory and emotional regulation, while many women reported increased anxiety, depression, and ...
Feb. 6, 2026 Scientists at Keck Medicine of USC are testing an experimental stem cell therapy that aims to restore the brain’s ability to produce dopamine, the chemical whose loss drives Parkinson’s disease. The early-stage clinical trial involves implanting ...
Latest Headlines
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Feb. 10, 2026 A bonobo named Kanzi surprised scientists by successfully playing along in pretend tea party experiments, tracking imaginary juice and grapes as if they were real. He consistently pointed to the ...
Feb. 9, 2026 We don’t experience the world through neat, separate senses—everything blends together. Smell, touch, sound, sight, and balance constantly influence one another, shaping how food tastes, objects ...
Feb. 6, 2026 New research using rhesus monkeys suggests that the brain’s relationship with alcohol may begin forming long before a person ever takes a drink. Scientists found that exposure to alcohol before ...
Feb. 5, 2026 At just two months old, babies are already organizing the world in their minds. Brain scans revealed distinct patterns as infants looked at pictures of animals, toys, and everyday objects, showing ...
Feb. 4, 2026 A massive Swedish study tracking nearly 28,000 people for 25 years found an unexpected link between full-fat dairy and brain health. Among adults without a genetic risk for Alzheimer’s, eating more ...
Feb. 4, 2026 Scientists still don’t know how the brain turns physical activity into thoughts, feelings, and awareness—but a powerful new tool may help crack the mystery. Researchers at MIT are exploring ...
Feb. 3, 2026 A new brain imaging study reveals that remembering facts and recalling life events activate nearly identical brain networks. Researchers expected clear differences but instead found strong overlap ...
Feb. 2, 2026 Chronic stress can damage the gut’s protective lining, triggering inflammation that may worsen depression. New research shows that stress lowers levels of a protein called Reelin, which plays a key ...
Feb. 1, 2026 When the brain rests, it usually replays recent experiences to strengthen memory. Scientists found that in Alzheimer’s-like mice, this replay still occurs — but the signals are jumbled and poorly ...
Feb. 1, 2026 Middle age is becoming a tougher chapter for many Americans, especially those born in the 1960s and early 1970s. Compared with earlier generations, they report more loneliness and depression, along ...