Regular napping linked to larger brain volume uclnews
, analyzed data from people aged 40 to 69 and found a causal link between habitual napping and larger total brain volume—a marker of goodSenior author Dr. Victoria Garfield said,"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."
Using a technique called Mendelian randomization, they looked at 97 snippets of DNA thought to determine people's likelihood of habitual napping. They compared measures of brain health and cognition of people who are more genetically"programmed" to nap with counterparts who did not have these genetic variants, using data from 378,932 people from the UK Biobank study, and found that, overall, people predetermined to nap had a larger total brain volume.
Associations between daytime napping and total brain volume in UKB, including sensitivity analyses. Note: n = 35,080, instrument details: Main=92-SNP main daytime napping instrument from Dashti et al, 2021, Adjusted=47-SNP instrument adjusted for excessive daytime sleepiness, Restricted=86-SNP instrument excluding individuals with self-reported sleep apnea, and 23&Me=17-SNP instrument used as it has no sample overlap with UKB.
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