Circadian Sleep Disorders Network

Celebrating #WorldSleepDay - hosted by @_WorldSleep - with the theme of 'Sleep Well, Live Better.' People living with DSPD & Non-24 may be as prevalent as 1 in 600. More research in Circadian Rhythm Disorders is desperately needed. 🔬🧬☀️🌒

Author @HaleyShapley contacted @CSD_N about input for the book NIGHT OWL. It will explore the science of chronotypes, the history of the night owl stigma and solutions for society to be more inclusive of a range of sleep-wake cycles. EVP @AlexWharton spoke with Shapley about CSD-N's mission to increase awareness of DSPD & Non24 and decrease the time to proper diagnosis. ➡️ NIGHT OWL is scheduled to be published by @MacmillanUSA @StMartinsPress in March 2027.

A clock in a bottle? By reconstituting cyanobacterial clock machinery in vitro, researchers uncovered how these biological clocks precisely switch gene expression on and off! @susanksgolden today.ucsd.edu/story/research…

“We were able to show how a single signal from the clock can turn one set of genes on and another set off, generating opposite phases of gene expression. In that cell, that means some cellular processes are peaking at dusk and others at dawn,” said Biological Sciences Distinguished Prof. Susan Golden (@susankgolden), the senior author of the study.

"It isn't being a night owl that's a problem," Dr. Kristen Knutson of @NUFeinbergMed said. "I think being a night owl who's trying to live in a morning lark's world is a conflict between one's internal clock and their social clock." #chronotype #nightowl 🦉abcnews.go.com/Health/night-o…

ADHD is a circadian rhythm disorder. We just published a new paper on the topic. frontiersin.org/journals/psych…

Nov. 24 is Non-24 Awareness Day! It's a neurological sleep disorder in which a person's sleep/wake cycle is longer than 24 hours. The person is unable to adjust their sleep/wake cycle to the length of the day, and their sleep time progresses around the clock. #circadian #non24

CSD-N SEEKS CANDIDATES FOR BOARD - We will be holding elections for our Board of Directors. Mtgs are held by online forum so you can log in at any time of day to participate. Directors start serving Jan. 15, 2026. Terms generally run for two years. #dspd #non24 #advocacy If you’re interested, pls let us know by Nov. 15 following the instructions here: circadiansleepdisorders.org/docs/ReqDir.php

Neurological circadian rhythm disorders aren't a sleep-wake schedule that can be changed through habits or entrainment. There's no flexibility like a typical circadian rhythm. Hence the term "disorder" rather than "preference". Photo: Bruno van der Kraan

Common anticholinergic drugs like Benadryl linked to increased dementia risk by @HarvardHealth -health.harvard.edu/blog/common-an…

Honored to be representing Delayed Sleep Phase Disorder patients on the @NIH SDRAB. The next meeting is August 7 & 8 - published in the Federal Register (FR. Doc. 2025 - 10538). #DSPD #circadian #advocacy nhlbi.nih.gov/events/2025/ni…

"Sleep difficulties are highly prevalent in children with autism spectrum disorder, affecting up to 80%." #DSDP #circadian #autism pnas.org/doi/full/10.10…

What a wonderful #SLEEP2025! We were truly inspired by the interest in misaligned body clocks and circadian rhythm disorders this year! #DSPD #non24 #nightowl #patient #Advocacy

.@HankGreen shares his experience w/ DSPD in this #vlogbrothers video. He discusses social model of #disability & DSM-5 definition of disorder: “Significant distress or impairment in social, occupational or other important areas of functioning.” #circadian youtu.be/JcwO11MQ5Uo?si…

Think circadian biology doesn’t matter? Ask someone with Non–24-Hour Sleep-Wake Rhythym Disorder. Actually... don’t. They’re too busy trying to function in a world that runs on a clock they can’t follow.