Could regular daytime naps help individuals slow the aging process from natural brain shrinkage?

Taking Naps

Research and experts suggest that a short nap between 10 to 40 minutes provides the most benefits, including:

• Improved mood
• Cognitive performance
• Alertness

A study suggests that daytime napping might prevent the brain from shrinking with age. (Paz V., Dashti H. S., & Garfield V. 2023)

Optimal Nap Time

A small study of young adults found that naps lasting 10 to 60 minutes immediately improved mood and alertness. However, most research shows that naps under 30 minutes offer the most benefit because individuals are less likely to enter the deep sleep stage or experience sleep inertia – a period of impaired alertness right after waking.  A meta-analysis also suggested that short naps reduce fatigue, increase productivity, and enhance physical performance. (Dutheil F. et al., 2021) A 10-minute nap is the most effective at improving:

• Sleep latency or sleep onset latency (SOL)
• Fatigue
• Vigor
• Cognitive performance

Some sleep specialists recommend that patients not take naps longer than 40 minutes, as too much napping could be unhealthy. Studies have shown that excessive daytime sleepiness and napping for over 60 minutes might increase the risk of type 2 diabetes and heart problems. (Yamada T, Nobuhiro S, Takashi K. 2016)

Health

In the study published in Sleep Health, researchers used data from over 30,000 participants aged 40 to 69 from the U.K. Biobank. Researchers examined genetic variants associated with taking naps regularly. (Paz V., Dashti H. S., & Garfield V. 2023) The researchers found a link between regular daytime napping and larger brain volume. The difference in brain volume between individuals who nap regularly and those who don’t was equivalent to 2.6 to 6.5 years of aging. However, no association was found between napping and cognitive performance reaction time or visual memory. The brain naturally shrinks with age, but this process is accelerated in individuals with neurodegenerative diseases and cognitive decline.

How To Avoid Napping for Too Long

Taking naps is good for you. But there’s a difference between healthy daytime sleep and counterproductive excessive sleeping.

• Sleep specialists recommend setting an alarm for a nap or asking a family member, friend, or coworker to wake you up.
• Individuals can try placing their phones or alarm clocks far away so they have to move to turn them off.
• Individuals are recommended to stand up immediately to wake the body through movement and light exposure to avoid feeling groggy after a nap.
• One study suggests consuming caffeine before a nap may be an effective countermeasure for sleep inertia. (Hilditch C. J., Dorrian J., & Banks S. 2016)
• Engaging in physical activities before and after naps can also help promote wakefulness.

Sometimes, people feel exhausted for various reasons, such as stress and nutrition, rather than a lack of sleep. In these cases, sleeping more than the body needs will only worsen sleep quality at night. When individuals are experiencing daytime fatigue, rather than lying back down or sitting in bed, sleep specialists suggest walking around. This allows the fatigue to pass, and the patient can sleep better at night.

Injury Medical Chiropractic and Functional Medicine Clinic

Chiropractic’s goals are to help individuals enhance movement with less pain due to a condition after injury or surgery. Injury Medical Chiropractic and Functional Medicine Clinic works with primary healthcare providers and specialists to develop optimal health and wellness solutions. We focus on what works for you to relieve pain, restore function, prevent injury, and help mitigate issues through adjustments that help the body heal itself. They can also work with other medical professionals to integrate a treatment plan to resolve musculoskeletal problems.

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Secrets of Optimal Wellness

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References

Paz, V., Dashti, H. S., & Garfield, V. (2023). Is there an association between daytime napping, cognitive function, and brain volume? A Mendelian randomization study in the UK Biobank. Sleep health, 9(5), 786–793. doi.org/10.1016/j.sleh.2023.05.002

Dutheil, F., Danini, B., Bagheri, R., Fantini, M. L., Pereira, B., Moustafa, F., Trousselard, M., & Navel, V. (2021). Effects of a Short Daytime Nap on the Cognitive Performance: A Systematic Review and Meta-Analysis. International journal of environmental research and public health, 18(19), 10212. doi.org/10.3390/ijerph181910212

Yamada T, N. S., Takashi K. (2016). Daytime napping, daytime sleepiness and the risk of metabolic diseases: dose-response meta-analysis using restricted cubic spline model. J Am Coll Cardiol., 67(13), 1951. doi.org/https://doi.org/10.1016/S0735-1097(16)31952-0

Hilditch, C. J., Dorrian, J., & Banks, S. (2016). Time to wake up: reactive countermeasures to sleep inertia. Industrial health, 54(6), 528–541. doi.org/10.2486/indhealth.2015-0236