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A MedPage Today neurology roundup published Oct. 20 reported that unintentional napping was associated with a higher incidence of possible or probable dementia. It also noted an expression of concern attached to a widely cited 2017 autism paper and a Boston University diagnosis of stage 3 CTE in late NASCAR Hall of Famer Fred Lorenzen. The reports describe associations and an editorial concern; they do not establish that napping causes dementia or explain the full basis for the paper concern.
A MedPage Today neurology roundup published Oct. 20, 2026, reported three developments: unintentional napping was associated with a higher incidence of possible or probable dementia; a highly cited 2017 autism paper received an editorial expression of concern; and researchers diagnosed late NASCAR Hall of Famer Fred Lorenzen with stage 3 CTE. The items concern different areas of neurological research and reporting, and the source does not establish that napping causes dementia or detail the basis for the journal’s concern.
Data from the National Health and Aging Trends Study showed an association between unintentional napping and a higher incidence of possible or probable dementia, according to the roundup, which cited the Journals of Gerontology: Series A. The report does not provide the study’s participant count, the size of the association, or details about how naps and dementia were assessed. The finding is an association, not proof that napping causes dementia.
The roundup also reported an editorial expression of concern for a widely cited 2017 paper in Nature. The paper had suggested that bacteria in a mother’s gut promoted neurodevelopmental abnormalities in mice. The source does not specify what prompted the editorial notice, whether the paper is under further review, or whether its findings have been corrected or retracted.
Separately, Boston University researchers diagnosed Fred Lorenzen with stage 3 chronic traumatic encephalopathy, the Concussion & CTE Foundation announced. Lorenzen, a NASCAR Hall of Famer, died in 2024 at age 89. The foundation described him as the first NASCAR driver with a confirmed CTE diagnosis. The source does not provide details of the diagnostic process or the evidence supporting the “first” designation.
Three Signals Across Neurology
The reports matter for different reasons. The napping finding may help researchers investigate a possible relationship between sleep behavior and dementia, but the available summary does not say whether napping could be an early sign of underlying health changes or a contributing factor. Readers should not treat it as evidence that ordinary naps cause dementia.
The Nature notice puts renewed attention on the reliability and status of a prominent animal study. An expression of concern alerts readers to an issue but is not, by itself, the same as a retraction or a determination that the research is invalid. Lorenzen’s diagnosis adds a documented CTE case to discussion of brain disease in professional motorsports, while one case cannot establish how common CTE is among NASCAR drivers or identify the cause of an individual’s condition.
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Studies and Announcements Behind the Roundup
The Oct. 20 MedPage Today item was a brief collection of neurology and neuroscience news, not a single study or unified investigation. Alongside the three developments highlighted here, it summarized research on epilepsy and dementia, stroke and vascular risks, emergency care for stroke, Alzheimer’s biomarkers, and other topics. The roundup’s format means that several findings are reported in a sentence, without the methods and limitations that would appear in the original studies.
The napping item cited the Journals of Gerontology: Series A and the National Health and Aging Trends Study. The autism item concerned a 2017 Nature paper involving mice and a proposed relationship between maternal gut bacteria and neurodevelopment. The Lorenzen item was attributed to the Concussion & CTE Foundation, which announced the diagnosis by Boston University researchers. The underlying source provides no direct quotations from the researchers, the journal, or Lorenzen’s family.
Limits of the Available Findings
The roundup does not include enough study detail to assess the napping result: it gives no effect size, follow-up period, participant characteristics, or information about other factors considered. It also does not say whether the association applies to particular patterns or durations of naps. The finding cannot establish cause and effect.
For the autism paper, the reason for the expression of concern and the journal’s next steps are not specified. The source does not say whether the authors or independent researchers have responded. For Lorenzen’s diagnosis, it gives the stage and the announcing organization but not the diagnostic method, the evidence reviewed, or the family’s response. The broader frequency of CTE among NASCAR drivers is not addressed.
Follow-Up From Journals and Researchers
Readers seeking detail on the dementia association will need the full study publication, including its methods, measurements and limitations. The summary does not identify a planned follow-up or say whether researchers will test the relationship in other groups.
For the autism paper, the relevant next development would be additional information from Nature about the concern and any review, correction or retraction decision. No timeline is given. The source likewise does not describe further research related to Lorenzen’s diagnosis or a broader assessment of CTE in NASCAR. Those questions remain open based on the material reported in the roundup.
Key Questions
Does unintentional napping cause dementia?
No causal link is established by the reported finding. The roundup says unintentional napping was associated with a higher incidence of possible or probable dementia; it does not provide evidence that naps caused dementia.
What happened to the 2017 autism paper?
The highly cited Nature paper received an editorial expression of concern. The roundup does not explain the reason or say whether the paper was corrected or retracted.
Who was diagnosed with CTE?
Fred Lorenzen, a NASCAR Hall of Famer who died in 2024 at age 89, was diagnosed with stage 3 CTE by Boston University researchers, according to the Concussion & CTE Foundation.
Was Lorenzen the first NASCAR driver diagnosed with CTE?
The Concussion & CTE Foundation announced him as the first NASCAR driver with a confirmed CTE diagnosis. The roundup does not provide additional information about how that designation was established.
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