Did You Get Your Flu Shot? It May Reduce Your Risk of Alzheimer’s Disease

 

Not only do flu shots NOT make a person more likely to get Alzheimer’s disease, a myth that has been around for years, but recent research has found evidence that flu and pneumonia vaccines may actually protect you from Alzheimer’s.  This year’s 2020 Alzheimer’s Association International Conference presented two studies that dealt with this very idea.  

The first study was from the University of Texas where they went through millions of medical records in a national database with the goal of finding factors that appeared to affect a person’s risk of getting Alzheimer’s disease.  Albert Amran, a medical student of the McGovern Medical School at the university’s Health Science Center in Houston and an author of the study, relates that one of the commonalities was getting a flu shot.  Researchers took into account other risk factors for Alzheimer’s such as smoking, obesity, diabetes, cardiovascular disease, education, and income as well as the number of prescriptions a person filled as a way to check their overall health.  Even after all that, Amran explained they found that “People who got at least one flu shot had a 17% reduction in risk, and people who got regular vaccinations saw their risk drop another 13%.

The other study presented at the conference was by a team of researchers from Duke University and the University of North Carolina.  Svetlana Ukraintseva, an associate research professor in the Biodemography of Aging Research Unit at Duke's Social Science Research Institute of Medical Records, said the team studied the medical records of more than 5,000 people at least 65 years and older.  In her presentation to the Conference, she stated they discovered individuals who had a “pneumonia vaccine before the age of 75 was at least 25% less likely to be diagnosed with Alzheimer's.” 

While scientists are uncertain why flu and pneumonia vaccinations appear to protect seniors from Alzheimer’s, they have some theories.  One may be the fact that flu and pneumonia adversely affect the brain so protecting a person from the disease protects their brain from damage.  Another theory is that getting the flu or pneumonia can result in a general weakening of the immune system and ultimately allow more bacteria and viruses into the brain, putting them more at risk for Alzheimer’s.   

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Source:npr.org/sections/health-shots/2020/07/27/894731147/flu-shot-and-pneumonia-vaccine-might-reduce-alzheimers-risk-research-shows