DiseasesHeartPreventionResearch

To Avoid A Stroke, Take Care of Your Teeth

Tooth-cleaning can reduce your risk of stroke

You might not realize it, but some of the most interesting and most truly useful health news never makes it to the mainstream news sites or newspapers. Instead it gets buried in obscure journals or on organizational websites. Unless it’s something that the media can spin into am eye-catching headline, you—and even your busy doctor—may never hear about it at all.

Here’s one great example: having your teeth professionally cleaned just once every few years significantly lowers your risk of heart attack and stroke. And having it done regularly cuts the risk by an amazing 24% and 13% respectively.

To put that in perspective, the most generous estimate of how much statins lower heart attack risk is about 8%. (Some experts even put the number as low as 1% or 2%.) And the percentage for stroke is so abysmal that no one even mentions it. But a simple tooth-cleaning can reduce your risk of stroke by 13%.

We’ve known for years that bacteria from your mouth can migrate to your heart and cause life-threatening infections. And we’ve also known that certain oral bacteria make blood clots—and ischemic strokes–more likely. And a study performed by the University of Louisville School of Medicine a couple of years ago tied a strain of oral bacteria to hemorrhagic strokes—the kind caused by bleeding in the brain—too. But in spite of this, we’re still not talking about oral hygiene.

That needs to change.

If this were a drug, we’d be seeing ads on TV

The fact that regular cleanings reduce heart attacks and strokes is old news. We first read about it way back in 2011. It was a large study that followed over 100,000 people for seven years.

The conclusions were pretty amazing.

Researchers found that those who had their teeth cleaned and scaled yearly had 24% fewer heart attacks and 13% fewer strokes than those who’d never had them cleaned. People who did it less than once every two years still had a 13% reduction in heart attacks and 9% in strokes. These results were presented at a meeting of the American Heart Association…yet somehow never reached the general public.

The knowledge that mouth bacteria cause blood clots is nothing new either. That information came out of the University of Bristol clear back in 2008. The Bristol scientists showed that oral bacteria enter the bloodstream through bleeding gums, a common symptom of gum disease.

Once in the bloodstream they surround themselves with platelets, which keeps the immune system from recognizing them as an infection and attacking them. Not only does this lead to clots, which can end up in the heart or brain and cause a heart attack or stroke, it also lets the bacteria migrate to and infect other areas–including the heart. This interesting and useful information never made a splash in the news either. And it didn’t affect how we practice medicine or the advice we give patients. Was this because we learned something that changed the facts later?

Nope. In fact, we’ve gone on to learn even more about how bacteria—some of which are totally harmless if they stay confined to our mouths—affect heart health including heart attacks, strokes, and hardening of the arteries.

Want to protect yourself from stroke? Take care of your teeth

More recent research published in the Nature journal Scientific Reports, links a strain of streptococcus bacteria to hemorrhagic stroke. This is the kind of stroke caused by bleeding in the brain.

In the study, more than a quarter of patients with this type of stroke had the S. mutans bacteria in their saliva while a mere 6% of other stroke victims did. Researchers also noticed a larger number of “microbleeds” in those harboring the bacteria. These are small hemorrhages that don’t result in stroke symptoms but can lead to dementia. They concluded that S. mutans may increase the risk of stroke, possibly by weakening blood vessels in the brain.

All this suggests that the health of your mouth directly affects your stroke risk and heart health, and that we probably should be doing something about it. After all, if we had a drug that cut heart attack risk by a quarter and stroke risk by 13%, it would be the blockbuster drug to end all drugs. But we don’t have a drug. What we do have is something even better. What we have is the ability to shrink the risk without any drug, through nothing more than positive habits that improve your oral health and ward off gum disease.

Many, many people have gingivitis, a mild form of gum disease. A lot of them don’t even know they have it. They may not be familiar with the symptoms–like bleeding gums or sensitive teeth–or may simply think those symptoms are normal.

Risk factors for developing gum disease include not brushing your teeth often enough or brushing improperly, and not flossing. If you’re diabetic, if you smoke, or if you’re pregnant you’re also more likely to develop the problem. Symptoms you may overlook include:

  • Sore gums
  • Gums that bleed when you brush your teeth
  • Red or swollen gums
  • Receding gums
  • and teeth that are sensitive to heat and cold

If you have any of these symptoms, you just might have gum disease. And if you do have gum disease, it’s an open invitation to the bacteria that contribute to strokes and heart attacks. The most important things you can do to prevent or reverse the problem are to brush and floss twice daily, and have your teeth cleaned regularly by a professional.

So here’s our prescription: to take care of your heart and your brain, take care of your teeth. Don’t just drag yourself to the dentist when you have a problem, be proactive. Do have a yearly dental checkup, whether you think you need it or not. Do have your teeth cleaned, whether you think they need it or not. And above all, be alert to the signs and symptoms of gum disease.

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To Avoid A Stroke, Take Care of Your Teeth
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To Avoid A Stroke, Take Care of Your Teeth
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Here’s one great example: having your teeth professionally cleaned just once every few years significantly lowers your risk of heart attack and stroke.
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