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Relationship between dementia and migraines examined
Migraines are a widespread complaint, the causes of which have not yet been fully clarified. However, it is known that migraines in certain cases can increase the risk of stroke and lead to changes in the brain tissue. A current study has now examined for the first time whether there is also a connection with the risk of dementia. The result is very comforting.
In view of the vascular and neuronal changes in migraines, experts have long suspected that there may also be a connection with the risk of dementia. A US research team led by Kristen M. George from the University of California Davis Medical Center has now investigated whether migraines can actually affect the risk of dementia. Their results were published in the specialist journal "Headache".
Related to cognitive loss?
"Whether migraines directly increase the risk of dementia has now been prospectively examined in a large cohort for the first time," reports the German Society for Neurology (DGN) of the current study. Because of the involvement of the brain vessels in the symptoms of migraine, it has been discussed for a long time whether there are connections between migraines and the loss of cognitive abilities or dementia.
Increased risk of stroke and changes in the brain
In particular, migraine diseases with aura (i.e. with previous visual disturbances such as flickering or flashing light or also neurological symptoms) are associated with a slightly increased risk of stroke, explains the DGN. Furthermore, in the so-called ARIC study, there was an association between migraine history and changes in the white matter of the brain, stroke-like lesions ("silent infarctions") and changes in brain volume.
Examined more than 12,000 people
According to the DGN, such abnormalities in the brain tissue are in turn associated with an increased risk of cognitive disorders, which is why the question has arisen whether a migraine itself is also a risk factor for the development of dementia. Using data from 12,495 participants (including 1,397 migraine sufferers) between the ages of 51 and 70, with a median follow-up of 21 years, the US research team looked for possible connections between the two symptoms.
No connection was found
A total of 18.5 percent of people without migraines and 16.7 percent of people with migraines developed dementia, the research team reports on the results of the data analysis. "There was no connection between migraine and dementia and there was no statistically significant interaction between gender and migraine status in the risk of dementia," write the researchers.
Changes in the brain without clinical significance?
"Despite the fact that migraine sufferers have changes in the brain tissue in rare cases, those affected have no higher risk of developing dementia," almost the DGN press officer Professor Dr. med. Hans-Christoph Diener put the results together. At the present time, there is no evidence that the changes in the white matter that occur during migraines are of clinical importance or disease value.
However, according to Prof. Diener, sufferers, especially women suffering from migraines with aura, should be monitored for their stroke risk and avoiding additional vascular risks such as smoking and hormone treatments if possible. (fp)
Author and source information
This text corresponds to the requirements of the medical literature, medical guidelines and current studies and has been checked by medical doctors.
Dipl. Geogr. Fabian Peters
- Kristen M. George, Aaron R. Folsom, A. Richey Sharrett, Thomas H. Mosley, Rebecca F. Gottesman MD, Ali G. Hamedani, Pamela L. Lutsey: Migraine Headache and Risk of Dementia in the Atherosclerosis Risk in Communities Neurocognitive Study ; in: Headache, Volume 60, Issue 5, May 2020, Headache
- German Society for Neurology (DGN): No connection between migraines and dementia (published May 20, 2020), dgn.org