What gum inflammation has to do with your heart
24.2.2026
Translation: Megan Cornish
It’s clear that inflammation harms the body – especially blood vessels. So, it stands to reason that chronic gum inflammation weakens your cardiovascular system in the long term. Read on to find out how you can protect yourself and what the catch is in the logical conclusion.
Good oral hygiene pays off two-fold: fresh breath and protection from high dental bills. But there’s another reason, which might sound far-fetched at first: you might also be indirectly protecting your blood vessels by brushing your teeth.
Where did this idea come from? Studies show that gum inflammation occurs remarkably often alongside cardiovascular diseases – which can lead to heart attacks. Whether poor oral hygiene’s really the trigger for the damaged blood vessels or merely a symptom of an unhealthy lifestyle has occupied researchers for years. The answer is complex, but crucial for your health.
Periodontitis: a shaky foundation
Periodontitis is chronic inflammation of the periodontium, the tissue that anchors your teeth in your jawbone – like the foundation of a house. If this tissue’s chronically inflamed, it becomes porous and weak. Unlike a minor injury that heals in a few days, periodontitis is an ongoing, slow-burning inflammation in your body that puts a constant strain on your entire system.
How your heart and teeth are linked
Inflammation’s rarely confined to one area of the body. Bacteria and inflammatory messengers from the mouth can enter the bloodstream. The problem is that arteriosclerosis (hardening of the arteries) is also an inflammatory process. Experts are concerned that ignoring chronic inflammation in the mouth could potentially fuel systemic processes that also damage blood vessels.
The catch: what causes what?
So why don’t experts just recommend brushing your teeth to «prevent heart attacks»? Because while it’s clear that poor oral hygiene and cardiovascular diseases often occur together (correlation), there’s no conclusive evidence that periodontitis actually causes vascular diseases (causality).
Take this classic scenario for example. On days with high ice cream sales, a lot of people get sunburn. Does the ice cream cause the sunburn? Of course not. Both are due to the sun. It’s the common factor that leads to both increased ice cream consumption and a higher risk of sunburn. The tooth brushing-heart attack question’s a similar situation: risk factors such as smoking, diabetes or stress act like the sun, damaging both the gums and the blood vessels. Casual observers can see the connection, but it’s easy to overlook the underlying cause.
Why brushing’s still your best bet
This is where the comparison with the ice cream example falls down. Even if you don’t eat ice cream, you’re not reducing your chances of getting sunburned. It’s a different story with dental hygiene: preventing inflammation in the mouth most likely protects your blood vessels too.
That’s why the American Heart Association (AHA) recently updated its scientific statement. The evidence is now so compelling that periodontitis can no longer be ignored. While there’s still no definitive evidence that gum treatment directly prevents heart attacks, one thing’s certain: treating periodontitis demonstrably reduces systemic inflammation in the body. And since inflammation is detrimental to blood vessels, experts strongly advise minimising risk in the mouth.
So, it’s actually pretty simple: if you take good care of your teeth, you’re guaranteed a healthy smile and fresh breath. And if research finally provides definitive evidence of causality in a few years, your heart and blood vessels will have already benefited.
Header image: Shutterstock
Anna Sandner
Senior Editor
Anna.Sandner@galaxus.deScience editor and biologist. I love animals and am fascinated by plants, their abilities and everything you can do with them. That's why my favourite place is always the outdoors - somewhere in nature, preferably in my wild garden.
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