The Week in Sleep News: March 15, 2024

Wake up on the wrong side of the bed? New research suggests mood may be linked to our circadian rhythm.

Two people sitting up with newspapers. Text reads: Sleep News, Week of March 15, 2024

This week in sleep news…

Obstructive sleep apnea linked to different rates of stroke risk by race

Research published in Neurology shows the results of risk of stroke based on diagnosis of obstructive sleep apnea (OSA) by race. The study of more than 22,000 people over 12 years of age found that OSA is associated with a significantly higher risk for stroke, regardless of continuous positive airway pressure (CPAP) device, for white individuals. When looking at the data, scientists found that having a diagnosis of OSA or high OSA risk was associated with higher risks for incident stroke in white individuals but not in Black individuals.

Additionally, among those with diagnosed OSA, CPAP use was associated with a higher risk of stroke in white individuals but a lower stroke risk in Black individuals compared with no CPAP use.

The link between sleep and mood

It turns out there may be a reason for waking up on the wrong side of the bed. A recent study of medical interns published in PLOS explored how mood changes with circadian phase and time awake. Results from wearable technology showed mood varied rhythmically, with participant mood peaking in the evening. The circadian rhythm’s impact on mood becomes more pronounced with longer periods of wakefulness, leading to a greater rhythmic amplitude of mood.

This research suggests a close link between mood, circadian rhythms, and sleep, offering insights for mood management and psychiatric care outside laboratory settings.

Oscar-winning actor Cillian Murphy shares his secret weapon

Responding to a question from Scott Pelley on 60 Minutes” about how Matt Damon called him the “worst dinner companion imaginable,” Oscar winner Cillian Murphy defended his precious time, breaking it down between time on set, keeping lines fresh, and sleep. “And then the other big thing for me is sleeping,” Murphy explains. “I just I love sleeping and I need sleep.” Given his exceptional turn in “Oppenheimer,” it’s clear his sleep formula is working.