A new study published in the European Heart Journal has uncovered a potentially groundbreaking connection between the shingles vaccine and a reduced risk of heart disease. The research, which examined over 1.2 million South Koreans aged 50 and older, found that those who received the shingles vaccine had a 23% lower risk of heart-related issues, including stroke, heart failure, and coronary artery disease, up to eight years after vaccination.
The findings suggest that the vaccine’s benefits extend beyond its traditional role in preventing the shingles virus and its associated complications, such as the painful rash. The researchers noted that the protective effects were particularly pronounced in individuals under 60 and in certain risk groups, such as men and those with unhealthy behaviors like sedentary lifestyles, alcohol consumption, or smoking. This indicates that the vaccine may offer additional health benefits, even for individuals without preexisting heart disease risk factors.
Lead author Professor Dong Keon Yon from Kyung Hee University College of Medicine explained that shingles infections can lead to blood vessel damage, inflammation, and clot formation, all of which contribute to cardiovascular disease. By preventing shingles, the vaccine may reduce these risks. However, Dr. Jasdeep Dalawari, a cardiologist not involved in the study, emphasized the need for further research, particularly in diverse populations, as the study was based on an Asian cohort. He also noted that the U.S. uses a different vaccine (Shingrix) with higher efficacy, which suggests the need for additional studies to confirm the findings in other demographics.