Some studies have shown that vaccinated individuals appear less likely than the unvaccinated to develop dementia, although scientists aren’t sure why.
There are many good reasons to get a flu shot this fall, but here’s one that might surprise you: It could protect your brain.suggests that regular vaccinations against influenza and other infectious diseases such as shingles, pneumococcal pneumonia, and tetanus, diphtheria and pertussis may reduce the risk of developing Alzheimer’s disease and related dementias.
In the flu study, the researchers took participants from a national patient database, two groups of 935,887 each, one group vaccinated, the other not. To avoid the potential influence of various factors that could affect the results, the scientists ensured that each group shared many of the same characteristics, such as age, gender, how frequently they went to the doctor, and certain medical conditions, such as high blood pressure and elevated cholesterol.
In two studies conducted in the United Kingdom — still unpublished and under peer review — researchers at Stanford University found similar results. The, among an older population in Wales, suggests that vaccination with Zostavax prevented an estimated 1 in 5 new dementia cases during a seven-year period, said, assistant professor of medicine in the division of primary care and population health at Stanford University, who led the research.
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