A recent study suggests that incorporating daytime naps into our routine as we age might contribute to maintaining our brain health. Nonetheless, it’s worth noting that excessive napping has been associated with potential harm.
Researchers from University College London (UCL) and the University of the Republic of Uruguay found a connection between regular napping and a larger total brain volume. This relationship is linked to a reduced risk of conditions such as dementia and other diseases related to brain health.
On average, those who napped exhibited a brain volume difference compared to non-nappers which was equivalent to aging 2.5 to 6.5 years, according to the study’s findings.
Victoria Garfield, a senior research fellow at UCL and the senior author of the study, remarked, “Our findings suggest that, for some people, short daytime naps may be a part of the puzzle that could help preserve the health of the brain as we get older.”
However, the study’s methodology had some limitations, including the reliance on self-reported napping habits, as pointed out by Tara Spires-Jones, president of the British Neuroscience Association and deputy director of the Centre for Discovery Brain Sciences at the University of Edinburgh, who wasn’t involved in the study. Despite these limitations, she emphasized that the study contributes to the growing body of evidence highlighting the importance of sleep for brain health.
Lead author Valentina Paz, a researcher from the University of the Republic of Uruguay and UCL, acknowledged the study’s limitations while expressing confidence in their chosen research approach.
Statistical approach
The study, published in Sleep Health, utilized a technique called Mendelian randomization, which involves analyzing DNA samples and brain scans from over 35,000 individuals aged 40 to 69. This approach allowed researchers to examine the relationship between genetic markers associated with napping tendencies and brain health.
It’s important to note, however, that this technique can only establish an association between napping and brain health, not a causal relationship. Additionally, the study lacked information about the duration of naps, which can influence their impact on health.
Napping can be harmful too
Regardless, previous research has also indicated potential risks associated with excessive napping. Frequent or long daytime naps have been linked to early dementia in older adults. A study published in the Journal of the Alzheimer’s Association found that those who napped at least once a day or napped for over an hour were more likely to develop Alzheimer’s.
Another study from July 2022 revealed a connection between regular napping and an increased risk of high blood pressure and stroke. Participants who frequently napped were more likely to develop high blood pressure and experience strokes compared to those who didn’t nap regularly.
Clinicians also highlight that excessive napping could indicate underlying sleep disorders, which might contribute to various health issues like obesity, high blood pressure, and type 2 diabetes.
Conclusion
In summary, the recent study underscores the potential benefits of incorporating short daytime naps into our routine for brain health as we age. However, excessive napping should be approached with caution, as it might indicate underlying health concerns.
By ChatGPT
