For years, shingles has been known for the painful rash it causes in older adults. But new research suggests it might have an unexpected connection to brain health. A growing body of evidence now points to the possibility that the shingles vaccine could help protect against dementia.<\/p>\n\n\n\n
A major new study published in Nature Medicine<\/em> in 2024 is leading the charge. Conducted by a team of scientists including Maxime Taquet, Quentin Dercon, John A. Todd, and Paul J. Harrison, the study used electronic health records from over 200,000 people in the United States. The researchers compared those who received the older, live shingles vaccine with those who got the newer, recombinant vaccine. The live vaccine is no longer used in the U.S., making this a unique opportunity to study both versions.<\/p>\n\n\n\n The findings are striking. People who received the recombinant shingles vaccine were 17 percent more likely to live longer without a dementia diagnosis over a six-year period compared to those who received the live vaccine. This translates to an average of 164 extra days without dementia symptoms for those who eventually developed the disease.<\/p>\n\n\n\n Importantly, this protective effect was seen in both men and women, though it was stronger in women. Women had a 22 percent longer diagnosis-free period, while men had a 13 percent increase.<\/p>\n\n\n\n The researchers also found that the recombinant vaccine performed better than two other common vaccines given to older adults: the influenza and tetanus-diphtheria-pertussis (Tdap) vaccines. This suggests the protection is not just a general benefit of being vaccinated but may be specific to the shingles vaccine.<\/p>\n\n\n\n The shingles vaccine is designed to protect against the varicella-zoster virus, which causes both chickenpox and shingles. Some scientists believe this virus may play a role in triggering or speeding up dementia. Past studies have hinted at a link between herpes infections and Alzheimer\u2019s disease.<\/p>\n\n\n\n By preventing shingles and reducing the chances of herpes-related inflammation in the brain, the vaccine may reduce one possible cause of dementia. Another possibility is that the recombinant vaccine’s immune-boosting ingredients stimulate the brain\u2019s defenses in a way that slows down the damage that leads to dementia. However, the exact mechanisms are still being studied.<\/p>\n\n\n\n Interestingly, the benefit seems to lessen toward the end of the six-year study period, which could mean the vaccine delays rather than completely prevents dementia. Even so, a delay of several months can have a real impact on quality of life, especially for older adults and their families.<\/p>\n\n\n\n Many earlier studies on vaccines and dementia used comparisons between people who chose to get vaccinated and those who didn\u2019t. That can be misleading, because people who get vaccinated tend to be healthier in general. This study got around that problem by comparing two groups of vaccinated individuals\u2014those who received the live vaccine before 2017 and those who received the recombinant vaccine after. This approach reduced the chance of bias and gave a clearer picture of the vaccine\u2019s effect.<\/p>\n\n\n\n The researchers also used advanced statistical methods to make sure both groups were similar in age, health history, and other important factors. Even when the data were analyzed in different ways and under stricter conditions, the results held up.<\/p>\n\n\n\n As with any observational study, this research can\u2019t prove that the vaccine directly prevents dementia. It\u2019s possible that other factors played a role. The study also did not look at how many doses of the vaccine were given or the exact timing of dementia diagnoses.<\/p>\n\n\n\n Another challenge is that being \u201cdiagnosis-free\u201d doesn\u2019t always mean being disease-free. Some people may have early dementia symptoms that haven\u2019t yet been recognized by doctors. Still, the large size of the study and the consistency of the findings add weight to the conclusions.<\/p>\n\n\n\n The recombinant shingles vaccine, known as Shingrix, is already widely available and recommended for adults aged 50 and older. It\u2019s usually given in two doses several months apart. Until now, its main purpose has been to prevent the painful effects of shingles. But this new research suggests it might also offer valuable protection for the brain.<\/p>\n\n\n\n While we wait for further studies\u2014and possibly randomized clinical trials\u2014to confirm these results, this discovery provides another good reason for eligible adults to consider getting the shingles vaccine. It\u2019s a simple step that may not only reduce the risk of a painful rash but also delay the onset of dementia by months or more.<\/p>\n\n\n\n As more scientists explore the connections between infections, vaccines, and brain health, we may soon find new ways to protect memory and cognitive function later in life. The shingles vaccine could turn out to be a surprising ally in the fight against dementia.<\/p>\n\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" For years, shingles has been known for the painful rash it causes in older adults. But new research suggests it might have an unexpected connection to brain health. A growing body of evidence now points to the possibility that the shingles vaccine could help protect against dementia. A major new study published in Nature Medicine in 2024 is leading the charge. Conducted by a team of scientists including Maxime Taquet, Quentin Dercon, John A. Todd, and Paul J. Harrison, the […]<\/p>\n","protected":false},"author":2,"featured_media":6546,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,10],"tags":[],"class_list":["post-6545","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mental-health","category-preventative-care"],"_links":{"self":[{"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/posts\/6545","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/healthnews.zone\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6545"}],"version-history":[{"count":1,"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/posts\/6545\/revisions"}],"predecessor-version":[{"id":6547,"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/posts\/6545\/revisions\/6547"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/media\/6546"}],"wp:attachment":[{"href":"https:\/\/healthnews.zone\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/healthnews.zone\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/healthnews.zone\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}How Might the Vaccine Help?<\/h4>\n\n\n\n
What Makes This Study Different?<\/h4>\n\n\n\n
What Are the Limitations?<\/h4>\n\n\n\n
What Can This Mean Right Now?<\/h4>\n\n\n\n