Shingles vaccine may reduce dementia, heart disease risk by 50%

• Adults ages 50 and older can defend themselves in opposition to shingles with a vaccine.
• Earlier analysis has proven that the shingles vaccine could assist decrease an individual’s danger for dementia and coronary heart illness.
• A brand new examine discovered that the shingles vaccine could assist decrease an individual’s danger for vascular dementia and cardiovascular occasions like blood clots, coronary heart assault, and stroke.

Since 2006, older adults have been capable of defend themselves from shingles by getting the shingles vaccine. The U.S. Facilities for Illness Management & Prevention (CDC) recommends adults ages 50 and over obtain two doses of the shingles vaccine.

Earlier analysis has proven that the shingles vaccine could supply extra well being advantages. For instance, a examine printed in Might 2025 discovered that the shingles vaccine could assist decrease an individual’s danger for cardiovascular occasions by 23%. And analysis printed in April 2025 reported that the shingles vaccine could assist scale back an individual’s dementia danger by as much as 20%.

For this examine, researchers analyzed the medical knowledge for greater than 38,000 individuals within the U.S. with a mean age of 69. Contributors who acquired the shingles vaccine have been adopted for a mean of three.6 years, and people who didn’t obtain the vaccine have been adopted for a mean of three.9 years.

“Vaccines don’t simply stop an infection — they will additionally form how the physique responds to irritation,” Ali Dehghani, DO, physician of inside medication at Case Western Reserve College and College Hospitals Cleveland Medical Middle, and presenting writer of this examine at IDWeek 2025, instructed Medical Information At the moment. “Herpes zoster (shingles) is now acknowledged as a situation that may have an effect on the guts, blood vessels, and mind lengthy after the rash is gone.”

“Understanding how the shingles vaccine may scale back these broader problems helps us respect vaccines as instruments for total well being safety, not only for stopping one illness,” Dehghani added.

On the examine’s conclusion, researchers discovered that when evaluating the shingles vaccine to the pneumococcal vaccine for the prevention of pneumonia, members who acquired the shingles vaccine lowered their danger for vascular dementia by 50%.

Moreover, those self same shingles-vaccinated members had a 27% danger discount for blood clots, a 25% decrease danger of coronary heart and stroke, and a 21% decrease loss of life danger.

“We’ve discovered from previous research that shingles can improve the danger of coronary heart assault, stroke, and dementia, however nobody had but requested whether or not being vaccinated earlier than getting shingles might reduce these long-term dangers,” Dehghani stated. “Our objective was to check whether or not vaccination won’t solely stop shingles itself, but additionally blunt the irritation that drives vascular and cognitive injury afterward.”

How: Lowering total irritation

“These numbers counsel the vaccine’s advantages could lengthen far past stopping shingles. We predict the shingles vaccine could assist the immune system management the virus earlier than it causes widespread irritation, which in flip might defend blood vessels and the mind. It highlights how lowering irritation early — by vaccination — can have lasting results on coronary heart, mind, and total survival.”
— Ali Dehghani, DO

“Our subsequent steps are to review how shingles-related irritation impacts blood vessels and the mind in sufferers with medical circumstances that predispose them to elevated Zoster susceptibility,” Dehghani added. “We’re additionally exploring whether or not different vaccines that scale back viral irritation present comparable long-term coronary heart and mind advantages.”

MNT spoke with Manisha Parulekar, MD, FACP, AGSF, CMD, director of the Division of Geriatrics at Hackensack College Medical Middle and co-director of the Middle for Reminiscence Loss and Mind Well being at Hackensack College Medical Middle in New Jersey, in regards to the shingles vaccine and its potential for decreasing vascular dementia danger.

“As a geriatrician who works day by day with sufferers and households affected by dementia, my first response was one in every of cautious optimism,” Parulekar stated. “This examine reinforces a principle now we have been exploring that irritation within the nervous system is a key driver of cognitive decline. For sufferers who usually really feel helpless in opposition to this illness, the potential advantage of a routine vaccination might supply a degree of safety (that) is encouraging.”

“This analysis suggests the shingles vaccine could do extra than simply stop a painful rash; it could additionally scale back irritation within the nervous system. If we are able to verify this hyperlink, it opens up a promising new avenue for prevention, not only for dementia however probably for different neurodegenerative ailments which can be additionally linked to irritation.”
— Manisha Parulekar, MD, FACP, AGSF, CMD

Though it’s far too early to say whether or not the varicella-zoster virus instantly causes dementia, extra analysis might clarify the hyperlink.

“It might be useful to increase this analysis from correlation to causation, to definitively verify if lowering the reactivation of the varicella-zoster virus is what really lowers dementia danger. Exploring why the impact was stronger in girls might present essential insights into the other ways this illness progresses in numerous populations,” Parulekar stated.

MNT additionally spoke with Cheng-Han Chen, MD, a board licensed interventional heart specialist and medical director of the Structural Coronary heart Program at MemorialCare Saddleback Medical Middle in Laguna Hills, CA, in regards to the examine’s findings concerning the shingles vaccine and lowered heart problems dangers, together with blood clots, coronary heart assault, and stroke.

“This examine discovered an affiliation between getting the shingles vaccine and a decreased future danger of coronary heart assault, stroke, dementia, and even loss of life,” Chen stated. “These outcomes are in keeping with earlier research, which have additionally discovered a cardio-protective and neuro-protective impact of the shingles vaccine.”

How shingles could result in different ailments

“Severe infections comparable to shingles can incite a powerful and hectic inflammatory response within the physique. This, in flip, might result in main adversarial well being results in many various organ methods. By higher understanding the well being advantages of the shingles vaccine, we could even be capable to increase the classes of sufferers who we expect would profit from vaccination.”
— Cheng-Han Chen, MD

“Future analysis can give attention to the potential mechanisms behind how the shingles vaccine might even have a causative protecting impact in opposition to heart problems,” Chen added.