New research presented at IDWeek 2025 reveals that the shingles vaccine may significantly reduce the risk of vascular dementia, stroke, and heart attack — highlighting its broader role in protecting long-term brain and cardiovascular health.
The shingles vaccine offers more than rash protection
A groundbreaking study presented at IDWeek 2025 suggests that the shingles vaccine may do far more than prevent a painful rash — it could also lower the risk of vascular dementia, stroke, heart attack, and blood clots. Researchers analyzed the medical data of over 38,000 adults in the United States, revealing that those who received the vaccine had a notably reduced risk of cardiovascular and cognitive complications.
According to Dr. Ali Dehghani, internal medicine specialist at Case Western Reserve University and University Hospitals Cleveland Medical Center, vaccines play a broader role in health protection. “Vaccines don’t just prevent infection — they can also shape how the body responds to inflammation,” he explained. “Herpes zoster (shingles) is now recognized as a condition that can affect the heart, blood vessels, and brain long after the rash is gone.”
Significant protection against dementia and heart disease
At the study’s conclusion, researchers found that participants vaccinated against shingles had:
- 50% lower risk of vascular dementia
- 27% lower risk of blood clots
- 25% lower risk of heart attack and stroke
- 21% lower risk of death
Dr. Dehghani emphasized that the vaccine’s benefits likely stem from its ability to reduce inflammation, protecting the heart and brain from long-term damage. “Reducing inflammation early — through vaccination — can have lasting effects on heart, brain, and overall survival,” he said.
Expert insights on the vaccine’s broader benefits
Dr. Manisha Parulekar, director of the Division of Geriatrics at Hackensack University Medical Center, called the findings “a source of cautious optimism.” She noted that inflammation in the nervous system is a key driver of cognitive decline. “This study suggests the shingles vaccine may reduce inflammation in the nervous system — opening a new avenue for preventing dementia and possibly other neurodegenerative diseases.”
Dr. Cheng-Han Chen, interventional cardiologist and medical director of the Structural Heart Program at MemorialCare Saddleback Medical Center, added that the study’s results align with previous research showing cardio-protective and neuro-protective benefits of the shingles vaccine. “Serious infections like shingles can trigger inflammation that harms multiple organ systems. By controlling this response, vaccination may offer long-term cardiovascular and neurological protection,” he said.
A new frontier in preventive health
While more research is needed to confirm a causal link between the shingles vaccine and dementia prevention, these findings strengthen the case for broader vaccination among adults aged 50 and older — the age group currently recommended by the CDC to receive two doses of the shingles vaccine.
Experts agree that this research underscores an important public health message: a simple vaccination may do more than prevent infection — it may protect the brain, heart, and overall longevity.
