New research published in the European Heart Journal suggests that the shingles vaccine may also protect against heart disease. The study found that people who received the shingles vaccine had a 23% lower risk of cardiovascular events compared to those who were not vaccinated.
Researchers studied health data from more than 1.2 million people aged 50 and older. They followed their health for up to 12 years. The study showed that the shingles vaccine reduced major cardiovascular events, such as stroke, heart attack, or death from heart disease, by 26%. It also lowered the risk of heart failure by 26% and coronary heart disease by 22% compared to unvaccinated individuals.
The strongest protection occurred during the first two to three years after vaccination. However, benefits appeared to last up to eight years. The vaccine’s effects were stronger in men, people under 60, and those who smoked, drank alcohol, or were physically inactive.
Lead researcher Professor Dong Keon Yon explained the link between shingles and heart disease. He said, “A shingles infection can cause blood vessel damage, inflammation, and blood clots, which may lead to heart disease. Vaccination prevents shingles and may reduce these risks.”
The study reviewed 18 types of cardiovascular disease and accounted for health conditions, lifestyle, and socioeconomic factors. Professor Yon added that the vaccine’s benefits appeared “even in people without known risk factors.” This suggests the vaccine may offer health advantages beyond preventing shingles.
The researchers noted some limitations. The study used a live zoster vaccine, which contains a weakened form of the virus. Many countries are now using newer vaccines that contain viral proteins instead of live virus. Future research will explore whether these newer vaccines also provide heart protection.
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