Here’s a head-scratcher.
A recent study of more than a million Americans just tied the COVID shot to a roughly 40% lower risk of heart attacks, strokes and heart-failure hospitalizations.
And it lands at an odd time — because just last year, Washington made that shot harder to get.
I’ve been reporting on money and health long enough to spot an odd collision when I see one. This is one of them.
What the study found
The research, published in JAMA Internal Medicine, followed more than 1 million veterans who got a flu shot at Department of Veterans Affairs facilities in 2024. About a third of them also got a COVID shot. Then researchers monitored their heart health for eight months.
The results? People who got the COVID shot had about a 38% lower risk of major cardiovascular events tied to COVID — heart attack, stroke and hospitalization for heart failure. The protection was strongest in folks 75 and older.
Then came the surprise. Vaccinated people also saw a nearly 24% drop in heart trouble from all causes, not just COVID-linked cases.
The study’s authors figure that’s because plenty of COVID infections go unnoticed, then damage the heart weeks later.
One caveat, and I’ll say it plainly: This is an association, not proof. The study shows vaccinated people fared better. It doesn’t prove the shot itself is the reason. Honest researchers say so, and so will I.
Why a shot might protect your heart
It’s not as strange as it sounds. A COVID infection cranks up inflammation and can damage blood vessels, which is hard on your heart. Dodge a bad infection, and you may dodge the cardiac fallout too.
And it’s not the first time researchers have linked a vaccine to a healthier heart. Other routine shots have even been tied to a lower risk of Alzheimer’s. Sometimes protection turns up where you least expect it.
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Meanwhile, Washington is making the shot harder to get
Here’s the collision. This data is landing well after federal officials already pulled back on who should get a COVID shot at all.
Under Health Secretary Robert F. Kennedy Jr., the Food and Drug Administration (FDA) narrowed clearance in 2025 to people 65 and up, plus younger folks with a health condition that raises their COVID risk. The Centers for Disease Control and Prevention also downgraded its blanket recommendation to a “talk to your doctor” approach.
Kennedy, a longtime vaccine skeptic, called the new approach “science, safety, and common sense.” Critics called it a step backward.
Either way, the practical result is the same. If you’re a healthy adult under 65, that shot is no longer the easy grab it was a couple of years ago.
So what should you do?
I’m a CPA, not a physician, so I won’t tell you to roll up your sleeve or skip it. That’s a call for you and your doctor.
But I’ll tell you this: Decisions get better when you’ve got the facts, and the facts here are genuinely mixed. The early worry about heart inflammation from mRNA shots was real, though studies found it milder than the heart damage COVID itself can cause.
Robert Califf, who used to run the FDA, looked at the new data and put it simply to STAT: “The evidence says that the benefits outweigh the risks.” For older adults and people with chronic conditions, he and the study’s authors say the upside is hard to ignore.
Heart disease is still the nation’s leading killer, and a lot of it is preventable through everyday habits like moving more and keeping a sensible bedtime. A shot that may help is worth an honest conversation, especially while you can still choose.
Bottom line? The science is pointing one way while policy points another. You don’t have to resolve that tension — but you should know it exists before you decide. Talk to your doctor, weigh your own risks, and make the call with your eyes open.
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