Dementia affects millions worldwide and research has been going on to find out ways to prevent it.
A key factor in reducing dementia risk has emerged from recent studies: REM (Rapid Eye Movement) sleep. This article will go into the findings that show REM sleep is key to brain health and will give you practical tips to improve it.
The Importance of REM Sleep
REM sleep is a stage of the sleep cycle where your eyes move rapidly, you dream vividly and your brain is more active. Itโs during this stage that major brain processing happens, memory consolidation, emotional regulation and cognitive function.
Key Findings:
A study in JAMA Neurology and reported by Science Alert has found out the importance of REM sleep in reducing dementia risk. The study reveals:
- Link to Dementia Risk: Those with reduced REM sleep were found to have higher risk of developing dementia. This means REM sleep is protective of cognitive health.
- Amyloid-Beta Clearance: REM sleep is associated with amyloid-beta clearance, the protein that forms plaques in the brains of people with Alzheimerโs disease. Clearing it during sleep prevents accumulation of these bad proteins.
- Cognitive Benefits: REM sleep enhances memory, learning and emotional stability which are important for brain health as we age.
How REM Sleep Reduces Dementia Risk
- Memory Consolidation: REM sleep processes and stores memories. By consolidating memories, REM sleep strengthens neural connections and reduces cognitive decline.
- Emotional Regulation: This stage processes emotional experiences, reduces stress and anxiety which are linked to cognitive health.
- Neuroprotection: REM sleep supports the brainโs glymphatic system which clears out toxins including amyloid-beta. This is important to prevent the formation of plaques associated with Alzheimerโs disease.
Practical Tips to Improve REM Sleep
Improving REM sleep quality can boost brain health and reduce dementia risk. Here are some tips:
- Establish a Sleep Schedule: Go to bed and wake up at the same time every day to regulate your sleep cycles and get enough REM sleep.
- Sleep Environment: Make your bedroom dark, quiet and cool. Comfortable bedding and minimal noise disturbance is a better sleep environment.
- Limit Blue Light: Blue light from screens can suppress melatonin production and disrupt your sleep cycle. Avoid screens at least an hour before bedtime and use blue light filters on your devices.
- Relaxation Techniques: Do relaxation activities like meditation, deep breathing exercises or gentle yoga before bed to reduce stress and prepare your body for sleep.
- Physical Activity: Regular physical activity promotes better sleep quality and can increase REM sleep. Aim for at least 30 minutes of moderate exercise most days of the week.
- Watch Your Diet: Avoid heavy meals, caffeine and alcohol close to bedtime. Opt for light snacks and herbal teas that promote relaxation and sleep.
Summary: Reducing Dementia Risk with REM Sleep
The connection between REM sleep and dementia risk means good sleep hygiene is crucial. Now that you know the role of REM sleep and how to improve it, support your brain health and reduce dementia risk. Try these out and have a healthier, more resilient brain and better life. Start prioritizing your REM sleep today for your future cognitive health.
Read the original study here.
Himali JJ,ย Baril A,ย Cavuoto MG, et al. Association Between Slow-Wave Sleep Loss and Incident Dementia.ย JAMA Neurol.ย 2023;80(12):1326โ1333. doi:10.1001/jamaneurol.2023.3889
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