Napping Most Days? What a New Study Says About Dementia Risk
Saturday, October 17, 2026
Saturday afternoons and naps go together for a lot of us. So a study making the rounds this week—and trending on X this morning—caught our eye: it looked at how older adults nap and whether those habits relate to dementia years later.
What the researchers found. A team at the Johns Hopkins Bloomberg School of Public Health followed 995 Medicare beneficiaries age 65 and older who did not have dementia in 2013, tracking them for up to 10 years through the National Health and Aging Trends Study. People who napped most days or every day had a 48% higher risk of developing dementia than those who rarely or never napped—even after the researchers accounted for health conditions and nighttime sleep, including sleep length, daytime sleepiness and sleep apnea risk. Unintentional napping—dozing off without meaning to—was linked to a 39% higher risk. The study was published online October 5 in The Journal of Gerontology: Medical Sciences. (Source: Johns Hopkins Bloomberg School of Public Health news release, Oct. 13, 2026.)
What it does not mean. This was an observational study, so it can't show that naps cause dementia. Senior author Adam Spira noted that frequent napping "could be a marker of changes in the brain, rather than a cause"—brain areas that keep us awake can be affected early in dementia. Napping habits were self-reported, and dementia was identified with a validated algorithm rather than a clinical exam. Earlier studies on naps have been mixed, with some even suggesting short naps may be harmless or helpful. In other words: don't give up a planned, refreshing nap because of one headline.
Why it's still useful. A noticeable change—someone who never napped now nodding off every afternoon, or falling asleep without intending to—is worth paying attention to. It can point to poor nighttime sleep, sleep apnea, medication side effects, depression or other health issues, many of which are treatable. Our articles on sleep and memory and medications that can affect memory explain more.
Try this today: start a two-week nap and sleep log
On a notepad or your phone, jot down three things each day for two weeks: what time you went to bed and got up, any daytime naps (how long, and whether you meant to nap), and how alert you felt. Ask a spouse or family member whether they've noticed snoring or pauses in breathing at night. Bring the log—and a list of all your medicines and sleep aids—to your next checkup. A pattern on paper makes it much easier for your doctor to spot a sleep problem worth treating. This is for conversation with your clinician, not a self-diagnosis.
Rest well this weekend—and we'll see you tomorrow.
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