Can a Shingles Vaccine Protect Your Heart?
Yes. A large study of over 246,000 U.S. adults with heart disease found that those who got the shingles vaccine were 46% less likely to suffer a major cardiac event and 66% less likely to die from any cause within one year. Vaccinated patients also had a 32% lower risk of heart attack, 25% lower risk of stroke, and 25% lower risk of heart failure.
These findings were presented at the American College of Cardiology’s 2026 Annual Scientific Session. They add to growing evidence that the shingles vaccine does more than just prevent a painful rash. It may also offer real protection for the heart, especially in people who already have cardiovascular disease.
What the Data Show
Researchers used a database of millions of American health records to study adults aged 50 and older with atherosclerotic heart disease, a condition where plaque builds up inside the arteries. They compared 123,411 people who received at least one dose of a shingles vaccine (either Shingrix or Zostavax) to the same number of unvaccinated people with similar health profiles.
When they looked at heart events occurring between one month and one year after vaccination, the results were striking. Vaccinated individuals saw a 46% lower risk of any major cardiac event and a 66% lower risk of death from any cause. Heart attacks dropped by 32%, stroke risk fell by 25%, and heart failure risk also declined by 25%. According to lead author Dr. Robert Nguyen, a resident physician at the University of California, Riverside, these reductions are comparable to what doctors see when patients quit smoking.
Dr. Kumar’s Take
I find this study genuinely exciting. We already knew the shingles vaccine was important for preventing a painful and sometimes debilitating infection. But the cardiovascular benefits shown here are remarkable. A 46% reduction in major cardiac events is the kind of number that gets attention in cardiology. That said, this is an observational study, not a randomized trial. People who choose to get vaccinated may also take better care of their health in other ways. The researchers did control for many of these factors, but we cannot be 100% certain the vaccine alone deserves all the credit. Still, this builds on a 2025 study showing a 23% lower cardiovascular risk in healthy adults who got the shingles vaccine, with benefits lasting up to eight years. For anyone over 50, this is one more strong reason to talk to your doctor about getting vaccinated.
How the Shingles Vaccine May Protect the Heart
Previous research has shown that a shingles infection can trigger dangerous blood clots around the brain and heart. These clots raise the risk of heart attacks, strokes, and other serious events. The herpes zoster virus, which causes shingles, is the same virus that causes chickenpox. It stays dormant in the body for decades and can reactivate later in life.
By preventing the virus from reactivating, the shingles vaccine may also prevent the clot formation that puts the heart at risk. This is especially important for people who already have plaque buildup in their arteries, since their blood vessels are already compromised and more vulnerable to clot-related damage.
Who Should Consider the Shingles Vaccine?
The CDC already recommends the shingles vaccine for all adults aged 50 and older, as well as younger adults with weakened immune systems. This study suggests that the benefits may be even greater for people who have existing heart disease. Dr. Nguyen emphasized that these findings give patients one more reason to follow through on vaccination, especially in an era when vaccine hesitancy is common.
Study Limitations
It is important to note that this study only tracked outcomes for the first year after vaccination. The lifetime effects could be different. The study is also observational, meaning researchers did not randomly assign people to get vaccinated or not. While they adjusted for housing, employment, education, and other health behaviors, people who get vaccinated may simply tend to live healthier lives overall. That said, the large sample size of over 246,000 people gives researchers a high degree of confidence in the findings.
Practical Takeaways
- If you are 50 or older and have heart disease, ask your doctor about the shingles vaccine, since this study suggests it may significantly lower your risk of heart attack, stroke, and death.
- Even if you have already had shingles, vaccination can help prevent future episodes and the cardiovascular risks that come with them.
- The shingles vaccine is recommended by the CDC for all adults over 50, so check with your insurance about coverage and schedule an appointment with your primary care provider.
Related Studies and Research
If you found this article helpful, you may also want to explore these related topics on cardiovascular health:
- Can meditation help prevent heart attacks and strokes?
- Ultra-processed foods linked to 47% higher heart disease risk
- Irregular sleep patterns increase heart disease risk by 2x in large study
- Does rosuvastatin prevent heart disease in healthy people with intermediate risk? A look at the HOPE-3 trial
FAQs
Is the shingles vaccine specifically approved for heart protection?
No. The shingles vaccine is approved by the FDA to prevent herpes zoster (shingles) and its complications. The cardiovascular benefits seen in this study are an observed association, not an approved indication. However, the growing body of research showing heart-protective effects gives doctors and patients an additional reason to prioritize vaccination. More research, including randomized controlled trials, would be needed before any official cardiovascular claims could be made about the vaccine.
Can the shingles vaccine help if I have already had a heart attack?
This study included people with existing atherosclerotic heart disease, which means many participants likely had a history of heart events. The results showed reduced risk across the board for vaccinated individuals, including lower rates of heart attack, stroke, and heart failure. While the study did not break down results specifically for post-heart-attack patients, the overall findings suggest that vaccination may offer protection even for those who have already experienced a cardiac event. Talk to your cardiologist about whether the shingles vaccine fits into your prevention plan.
How long do the heart benefits of the shingles vaccine last?
This particular study only followed patients for one year after vaccination, so the long-term cardiovascular effects remain uncertain. However, a separate study published in 2025 found that the shingles vaccine’s cardioprotective effects could last up to eight years in a healthy general population. That earlier study also found a 23% lower risk of cardiovascular events overall. Together, these findings suggest the heart benefits may extend well beyond the first year, though more long-term research in high-risk patients is needed.
Bottom Line
A major study of over 246,000 Americans with heart disease found that the shingles vaccine was associated with dramatically lower rates of heart attacks, strokes, heart failure, and death. While more research is needed to confirm these findings in randomized trials, the evidence is strong enough to reinforce what the CDC already recommends: all adults over 50 should get vaccinated against shingles. For people with existing heart disease, the potential benefits appear to be even greater.
