Summary: Migraines substantially increase the risk of developing dementia of all types, including Alzheimer’s disease, according to a prospective cohort study of older adults.
Source: Wiley
Dementia is the most common neurological disorder in older adults, while headaches—including migraines—are the most common neurological complaint across age groups. A recent study published in the International Journal of Geriatric Psychiatry examined the connection between migraine history and later development of dementia in community-dwelling older adults. The findings show that a lifetime history of migraines is a significant risk factor for all-cause dementia and specifically for Alzheimer’s disease.
Early identification of modifiable and non-modifiable mid-life risk factors for dementia is essential for targeted monitoring and prevention strategies. Recognizing migraines as a potential risk factor could improve early detection of individuals at higher risk and contribute to a better understanding of underlying mechanisms in Alzheimer’s disease and other dementias.
“We don’t yet have any way to cure Alzheimer’s disease, so prevention is key,” said senior author Suzanne L. Tyas, PhD, from the University of Waterloo in Canada.
“Identifying a link to migraines provides us with a rationale to guide new strategies to prevent Alzheimer’s disease.”
Source:
Wiley
Media Contacts:
Penny Smith – Wiley
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Original Research: Open access
Title: “Migraine and the risk of all‐cause dementia, Alzheimer’s disease, and vascular dementia: A prospective cohort study in community‐dwelling older adults”. Rebecca E. Morton, Philip D. St. John, Suzanne L. Tyas.
Journal: International Journal of Geriatric Psychiatry. DOI: 10.1002/gps.5180
Abstract
Migraine and the risk of all‐cause dementia, Alzheimer’s disease, and vascular dementia: A prospective cohort study in community‐dwelling older adults
Objectives
This study set out to investigate whether a history of migraines is associated with an increased risk of developing dementia in later life, including dementia overall (all-cause dementia), Alzheimer’s disease (AD), and vascular dementia (VaD). Headache disorders are widespread, and if migraines impart long-term risk for cognitive decline, they may represent an important marker for prevention efforts.
Methods
Researchers analyzed data from 679 community-dwelling adults aged 65 years and older who participated in the Manitoba Study of Health and Aging, a population-based prospective cohort. All participants were cognitively intact at baseline and had complete information on migraine history and relevant covariates. Cognitive assessments were repeated five years later to determine new cases of all-cause dementia, Alzheimer’s disease, and vascular dementia. Statistical models adjusted for potential confounders including age, sex, education, and depression, as well as intervening vascular and cardiac conditions (hypertension, myocardial infarction, other heart conditions, stroke, and diabetes).
Results
A lifetime history of migraines was associated with a significantly higher likelihood of developing all-cause dementia and Alzheimer’s disease over the follow-up period. Specifically, the adjusted odds ratio for all-cause dementia was 2.97 (95% confidence interval 1.25–6.61) and for Alzheimer’s disease was 4.22 (95% confidence interval 1.59–10.42). The study did not find a statistically significant association between migraines and vascular dementia before or after adjustment for intervening health conditions (adjusted odds ratios did not reach significance).
Conclusions
The findings indicate that migraines are a significant risk factor for the later development of Alzheimer’s disease and for dementia overall in older adults. Despite vascular processes implicated in migraine biology, this analysis did not show a clear link between migraine history and vascular dementia. These results highlight the potential long-term cognitive consequences of migraines and underscore the importance of considering migraine history in clinical assessment and research into dementia prevention and disease mechanisms.
Clinicians and researchers should note the implications for patient management and the need to further explore biological pathways connecting migraine to neurodegeneration. While these findings do not establish causation, they suggest that migraine history may help identify individuals for closer cognitive monitoring and for inclusion in studies aimed at preventing or delaying the onset of dementia.