There was frost on the rhododendrons when I stepped onto the porch this morning, that thin, white-crystal kind that disappears the second the sun touches it. March in Asheville can't make up its mind. I had my coffee in one hand and my phone in the other, which is a habit I keep promising myself I'll break, and I saw a headline from a cardiology conference that stopped me mid-sip.
A shingles vaccine. Protecting hearts.
My coffee went cold on the railing. Because Harold had shingles. In the summer of 2007, two years before the pancreatic cancer took him, he broke out in blisters along his left ribcage, and the pain was so fierce he couldn't sleep on that side for weeks. He also had coronary artery disease. Those two facts lived in separate folders in my mind for almost twenty years. This study just put them in the same one.
What 246,822 Medical Records Revealed
Researchers presented their findings at the American College of Cardiology's annual conference, ACC.26, held March 16 through 18, 2026, in New Orleans. A team analyzed medical records from 246,822 U.S. adults who already had atherosclerotic cardiovascular disease. Hardened, plaque-narrowed arteries. It's the kind of diagnosis that makes your cardiologist speak more slowly and hand you pamphlets.
Among those quarter-million people, the ones who had received the shingles vaccine (Shingrix, specifically) had 46 percent lower odds of experiencing a major adverse cardiac event. Let me sit with that number for a moment, because it's large enough to feel unbelievable. Forty-six percent.
But it doesn't stop there.
Vaccinated individuals had 66 percent lower odds of dying from any cause within one year. They were 32 percent less likely to have a heart attack, 25 percent less likely to suffer a stroke or develop heart failure. Researchers noted these reductions were comparable to the cardiovascular benefit of quitting smoking.
Now, I have to be honest with you the way I'd be honest sitting across a kitchen table. This was an observational study, not a randomized controlled trial. Researchers looked backward through records rather than assigning people to receive the vaccine or a placebo. It's possible the people who got vaccinated were already more engaged with their health in ways the data can't fully capture. Correlation is not causation, and the scientific community will need prospective trials to confirm what this data suggests.
But 246,822 people is not a small sample. And the population studied, adults with established heart disease, is overwhelmingly seniors. People like the ones I've worked with for forty years. People like many of us reading this right now. That signal is strong enough that ignoring it would be its own kind of risk.
If you're already managing heart-related conditions, this is worth a conversation with your doctor. Not next year. This month.
Embers Behind the Fireplace Screen
So how would a vaccine designed to prevent a painful rash end up protecting the heart? The answer lives in your nervous system, and it has to do with a virus most of us have been carrying since childhood.
If you had chickenpox (and most Americans born before 1980 did), the varicella-zoster virus never actually left your body. It retreated into nerve cells near the spine and brain stem, where it has been sitting quietly for decades. Think of it like embers behind a fireplace screen. Mostly contained. Mostly harmless. But every now and then, a spark jumps the screen.
When the virus reactivates as shingles, it doesn't just cause blisters and nerve pain. It triggers a systemic inflammatory response, the body's alarm system going off in a way that echoes through the bloodstream. Inflammation like this can destabilize arterial plaque, the fatty buildup along vessel walls. Stable plaque is manageable. Destabilized plaque ruptures. Ruptures cause heart attacks and strokes.
It also promotes abnormal blood clotting, which compounds the danger.
What Shingrix appears to do, beyond preventing the rash itself, is stop that reactivation cold. No reactivation, no inflammatory cascade. No cascade, no destabilized plaque. The vaccine isn't treating heart disease directly. What it does is remove one of the sparks that can set the whole thing off.
A better screen for the fireplace.
What You Need to Know About Shingrix
Shingrix, manufactured by GSK, replaced the older Zostavax vaccine, which was discontinued in the United States in November 2020. And it matters because I still meet people, regularly, who believe they're covered because they got "the shingles shot" eight or ten years ago. If your shot was Zostavax, it is no longer considered adequate protection. CDC recommends getting Shingrix even if you previously received Zostavax.
Who qualifies: All adults 50 and older, plus adults 19 and older who are immunocompromised. Shingrix is a recombinant vaccine, meaning it does not contain live virus, so it's safe for people with weakened immune systems.
Dosing schedule: Two doses, spaced two to six months apart. Both doses matter. One dose alone provides partial protection, but the second dose is what brings effectiveness above 90 percent against shingles. That protection remains around 85 percent even four years later.
Side effects, honestly: Your arm will be sore. You may feel tired, achy, maybe feverish for two or three days. I won't sugarcoat it; Shingrix side effects are more noticeable than a flu shot. But that discomfort is your immune system responding vigorously. Doing exactly what you want it to do!
Cost: This is where it gets tricky, and I've watched people get confused at the pharmacy counter. Shingrix is covered under Medicare Part D (your prescription drug plan, not Part B). Bring your Part D card. Most people pay between zero and fifty dollars per dose. Without insurance, expect $150 to $200 per dose. Most pharmacies carry it: CVS, Walgreens, most grocery store pharmacies, and many independent pharmacies. No doctor's appointment required, though telling your doctor is still wise.
Keeping up with routine preventive care is one of the most important things we can do as we get older, and sometimes the simplest steps carry the most weight.
Three People I'm Thinking of Right Now
Lenora is 72 and lives outside of Hendersonville. Coronary artery disease diagnosed at 64. She takes her statin, watches her sodium, walks the greenway three times a week. She has never, not once, thought of the shingles vaccine as part of her cardiac care. Why would she? Nobody told her.
Charles is 68. Got Zostavax in 2015 at his doctor's suggestion and checked "shingles vaccine" off his mental list permanently. He doesn't know Shingrix exists, doesn't know Zostavax was pulled from the market. No one followed up.
And then there's Denise. Sixty-one. Her husband has Parkinson's, and she spends so much energy managing his medications, his physical therapy appointments, his neurologist visits, she has let her own preventive care slide for three years running. I see this constantly in my work — no, actually, I've lived it. During my mother's Alzheimer's years, I once realized I hadn't seen my own doctor in fourteen months. The caregiver vanishes into the caring. We have to keep pulling ourselves back into view.
If you're monitoring your own health numbers at home, you already understand the value of staying ahead of problems rather than chasing them.
Seven Things to Do This Week
- Check your vaccination records. Call your pharmacy or doctor's office if you're unsure whether you received Shingrix or the older Zostavax
- Schedule dose one at your nearest pharmacy. Most allow walk-ins, but appointments guarantee no waiting
- Bring your Medicare Part D card, not Part B
- Mark your calendar for dose two, ideally two to six months after the first
- Mention the ACC.26 study to your cardiologist or primary care doctor at your next visit
- Tell one person what you've learned — a sibling, a neighbor, someone in your wellness community — because information only helps when it moves
- Plan a rest day after your shot. You may feel tired, and giving yourself permission to slow down is not weakness
What I Keep Coming Back To
By the time I finished reading that study this morning, the frost was gone. Just wet, glossy rhododendron leaves in the first real light. I laced up my boots and walked anyway, the trail along the creek, the one with the hemlock bend where the valley opens and you can see all the way to Craggy Gardens on a clear day.
Forty years of working with seniors has taught me something I trust completely: the most powerful health interventions are usually the simplest ones. Not the expensive ones. Not the complicated ones. The ones you can do on a Tuesday afternoon at a pharmacy counter.
This isn't a miracle. It's a vaccine doing more than we knew it could. And knowing matters. Knowing is how we take care of ourselves and each other, not perfectly, not without fear, but with whatever information the morning brings.
You are worth that Tuesday afternoon. You have always been worth it!
