Longer rapid eye movement sleep is associated with a lower risk of more than 80 different diseases, according to a large study published in the scientific journal PLOS Medicine. Researchers analyzing data from nearly 100,000 UK Biobank participants found that time spent in specific sleep phases matters just as much to overall health as total sleep duration.
REM Sleep Duration Linked to Lower Risk of 80 Conditions
Researchers investigating the connection between sleep architecture and long-term health examined data from more than 95,500 adults with an average age of 56. Participants wore special wrist devices for one week to measure exact sleep duration, sleep stages, and schedule regularity, then were tracked for an average of nearly nine years to monitor health outcomes. The findings, highlighted by MedicalNewsToday, show that extended REM sleep—the stage where most vivid dreaming occurs—corresponds with a reduced risk of contracting over 80 distinct medical conditions.
Specific illnesses tied to longer REM sleep include sirds mazspēja (heart failure), paaugstināts asinsspiediens (high blood pressure), priekškambaru mirdzēšana (atrial fibrillation), koronārā sirds slimība (coronary heart disease), Parkinsona slimība (Parkinson’s disease), multiplā skleroze (multiple sclerosis), and demence (dementia). Meanwhile, sufficient deep sleep is linked to a lower risk of seven specific health issues, including 2. tipa diabēts (type 2 diabetes), smaga depresija (severe depression), miega apnoja (sleep apnea), and Parkinson’s disease.
Distinguishing Sleep Stages from Underlying Health Conditions
Scientists caution that sleep patterns do not uniformly act as direct causes of illness, noting that reverse causation is possible in several cases. For instance, sleep disturbances serve as a frequent symptom of depression, meaning a fragmented night’s rest often results from an existing condition rather than triggering it. Conversely, spending too much time in light sleep generally indicates lower overall sleep quality. The PLOS Medicine study linked prolonged light sleep to an increased risk of severe depression, while paradoxically finding connections to a lower risk of heart failure and skin inflammation.
Did you know? While total sleep duration is widely discussed, tracking technology revealed that the actual time spent in REM and deep sleep phases provides a much more accurate picture of long-term health risks than hours spent in bed alone.
Impact of Nighttime Awakenings and Irregular Schedules
The research also evaluated the consequences of waking up during the night after initial sleep onset. Spending extended periods awake in the middle of the night correlated with a higher risk of dependency, excessive alcohol consumption, and osteoartrīts (osteoarthritis). Maintaining an irregular sleep schedule showed significant ties to an increased risk of vēdersāpju (abdominal pain), trauksmes (anxiety), and severe depression. These findings demonstrate that both sleep continuity and schedule consistency play vital roles in physical and mental well-being.
Study links longer REM sleep to lower disease risk
What is the main finding regarding REM sleep in the PLOS Medicine study?
Researchers discovered that longer rapid eye movement sleep is associated with a reduced risk of developing more than 80 different diseases, including heart failure, Parkinson’s disease, and dementia.
How was sleep data collected for the nearly 100,000 participants?
Participants with an average age of 56 wore specialized wrist-monitoring devices for one week to accurately record sleep duration, distinct sleep phases, and regularity.
Are sleep disruptions always the direct cause of health problems?
Not always. Scientists emphasize that reverse causation can occur, such as when sleep disturbance acts as a symptom of an existing condition like depression rather than its root cause.
What health risks are associated with middle-of-the-night awakenings?
Longer periods of wakefulness in the middle of the night were linked to a higher risk of dependency, excessive alcohol use, and osteoarthritis.
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