Diseases & Conditions

Harvard study: Shingles linked to a spike in risks for heart attack and stroke

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By , Executive Editor, Harvard Health Letter

photo of a vial of the shingles vaccineIf you had chickenpox as a kid — and most people in the United States over age 50 did — then you’re at risk for shingles. It’s a painful reactivation of the chickenpox bug (the varicella-zoster virus) that has been dormant and hiding in your nerve cells. It can move through the nerves to the surface of the skin, causing painful blisters and potentially long-lasting pain. And here’s something else that shingles might leave you with, according to a Harvard study: greater risks for heart attack and stroke. The research, published Dec. 6, 2022, in the Journal of the American Heart Association, came from three large studies involving more than 200,000 men and women who answered questions about their health. Researchers combed through the information and compared it to participants’ medical records over 16 years. People who’d had shingles at some point had a 30% higher long-term risk for a major cardiovascular event, compared with people who didn’t have shingles. The study was observational and doesn’t prove that having shingles causes heart attack or stroke. But it’s a good reminder to get the shingles vaccine (Shingrix) if you haven’t already. It’s given in two doses, two to six months apart, and it’s 90% effective. It’s recommended for adults ages 50 or older.

Image: © Stock Footage, Inc./Getty Images

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About the Author

photo of Heidi Godman

Heidi Godman, Executive Editor, Harvard Health Letter

Heidi Godman is the executive editor of the Harvard Health Letter. Before coming to the Health Letter, she was an award-winning television news anchor and medical reporter for 25 years. Heidi was named a journalism fellow … See Full Bio
View all posts by Heidi Godman


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