Nav: Home

Study links sleep disturbances and Alzheimer's among Hispanics

October 09, 2019

(Miami, FL) Sleep disturbances among Hispanics may increase their risk of cognitive impairment and Alzheimer's disease, according to a new study led by a University of Miami Miller School neurologist and sleep expert.

"Insomnia, and prolonged sleep duration appear to be linked to a decline in neurocognitive functioning that can precede the onset of Alzheimer's disease or other dementias," said Alberto R. Ramos, M.D.MSPH, Associate professor of neurology. "This finding is particularly important because Hispanics have a significantly higher risk of Alzheimer's disease compared with non-Hispanic whites."

Dr. Ramos was the lead author of the collaborative study, "Sleep and Neurocognitive Decline in the Hispanic Community Health Study / Study of Latinos" published on October 9 in Alzheimer's & Dementia: The Journal of the Alzheimer's Association. The multi-center research team analyzed participants in the nationwide Hispanic Community Health Study/Study of Latinos, which includes approximately 16,000 Latinos from diverse backgrounds at four major urban centers located in Chicago, Miami, San Diego and the Bronx in New York City.

"We followed 5,247 participants between 45 and 75 years old, giving them a neurocognitive test at the start and repeating the test seven years later," said Dr. Ramos.

"We observed that prolonged periods of sleep and chronic insomnia symptoms led to declines in memory, executive function and processing speed. Those measures can precede the development of mild cognitive impairment and Alzheimer's disease."

Funded by the National Institutes of Health (NIH), the groundbreaking epidemiological study also included measures of sleep apnea, which has been linked to impaired cognition. "No previous studies used data from a representative sample of U.S. Hispanic/Latinos for these multiple types of sleep disturbances," said Dr. Ramos.

Dr. Ramos said the findings provide a foundation for building awareness among physicians that sleep disturbances may be linked to neurocognitive decline, particularly in Hispanic patients. "We may also be able to identify at-risk patients who may benefit from early intervention to prevent or reduce the risk of dementia," he said.

Future research may involve quantifying the potential synergistic effect of sleep disorders with cerebrovascular disease as a pathway to neurocognitive decline. Dr. Ramos added, "We may also want to look at individual's circadian rhythms or internal clocks, as well as genetic studies that can clarify the relationships of sleep disorders with neurocognitive decline."
-end-


University of Miami Miller School of Medicine

Related Dementia Articles:

Digital solutions for dementia care
Telehealth delivery of dementia care in the home can be as effective as face-to-face home visit services if carers and recipients take advantage of the technologies available, Australian researchers say.
Despite a marked reduction in the prevalence of dementia, the number of people with dementia is set to double by 2050 according to new Alzheimer Europe report
Today, at a European Parliament lunch debate, Alzheimer Europe launched a new report presenting the findings of its collaborative analysis of recent prevalence studies and setting out updated prevalence rates for dementia in Europe.
Inflammatory marker linked to dementia
Higher levels of an inflammatory marker, sCD14, were associated with brain atrophy, cognitive decline and dementia in two large heart studies.
How likely do you think you are to develop dementia?
A poll suggests almost half of adults ages 50 to 64 believe they're likely to develop dementia.
Latest issue of Alzheimer's & Dementia
Predicting heart disease might also be a warning sign for Alzheimer's; A new way to think about the environment and Alzheimer's research; Most dementia patients don't receive care from physicians who specialize in brain health.
What multilingual nuns can tell us about dementia
A strong ability in languages may help reduce the risk of developing dementia, says a new University of Waterloo study.
Brain changes may help track dementia, even before diagnosis
Even before a dementia diagnosis, people with mild cognitive impairment may have different changes in the brain depending on what type of dementia they have, according to a study published in the September 11, 2019, online issue of Neurology®, the medical journal of the American Academy of Neurology.
Could marriage stave off dementia?
Dementia and marital status could be linked, according to a new Michigan State University study that found married people are less likely to experience dementia as they age.
Migraine diagnoses positively associated with all-cause dementia
Several studies have recently focused on the association between migraine headaches and other headaches and dementia and found a positive migraine-dementia relationship.
Apathy: The forgotten symptom of dementia
Apathy is the most common neuropsychiatric symptom of dementia, with a bigger impact on function than memory loss -- yet it is under-researched and often forgotten in care.
More Dementia News and Dementia Current Events

Trending Science News

Current Coronavirus (COVID-19) News

Top Science Podcasts

We have hand picked the top science podcasts of 2020.
Now Playing: TED Radio Hour

Clint Smith
The killing of George Floyd by a police officer has sparked massive protests nationwide. This hour, writer and scholar Clint Smith reflects on this moment, through conversation, letters, and poetry.
Now Playing: Science for the People

#562 Superbug to Bedside
By now we're all good and scared about antibiotic resistance, one of the many things coming to get us all. But there's good news, sort of. News antibiotics are coming out! How do they get tested? What does that kind of a trial look like and how does it happen? Host Bethany Brookeshire talks with Matt McCarthy, author of "Superbugs: The Race to Stop an Epidemic", about the ins and outs of testing a new antibiotic in the hospital.
Now Playing: Radiolab

Dispatch 6: Strange Times
Covid has disrupted the most basic routines of our days and nights. But in the middle of a conversation about how to fight the virus, we find a place impervious to the stalled plans and frenetic demands of the outside world. It's a very different kind of front line, where urgent work means moving slow, and time is marked out in tiny pre-planned steps. Then, on a walk through the woods, we consider how the tempo of our lives affects our minds and discover how the beats of biology shape our bodies. This episode was produced with help from Molly Webster and Tracie Hunte. Support Radiolab today at Radiolab.org/donate.