Your mouth and your brain may seem unrelated, but they are closely connected.

Research shows that stroke, gum disease, and poor oral health are linked.

Looking after your teeth and gums is not just about your smile; it is part of protecting your overall health.

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How oral health may affect stroke risk

Gum disease is an infection of the tissues that support your teeth. It happens when plaque builds up along the gumline, causing inflammation.

If gum disease is not treated:

• Harmful bacteria can enter the bloodstream.
• This can contribute to inflammation in blood vessels around the body.
• Inflammation and infection may contribute to the narrowing or damage of blood vessels.

These changes are linked with conditions that increase stroke risk, such as:

• Atherosclerosis (narrowing of the arteries).
• High blood pressure.
• Heart and blood vessel disease.

This means people with severe gum disease may have a higher risk of stroke compared to those with healthy gums.

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Inflammation

Both gum disease and stroke are linked to inflammation in the body.

Long-term inflammation can:

• Damage blood vessels.
• Make blood more likely to clot.
• Affect how the body responds to infection.

Poor oral health can be part of this wider inflammatory process.

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Why oral health matters more after a stroke

If you have had a stroke, looking after your mouth is especially important.

After a stroke, some people have:

• Weakness or reduced movement in their hands or face.
• Difficulty swallowing.
• A dry mouth due to medicines.

These can make cleaning the mouth harder and increase the risk of:

• Gum disease.
• Tooth decay.
• Mouth infections.

Bacteria from the mouth can also be inhaled, increasing the risk of chest infections such as pneumonia.

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Signs of gum disease to look out for

Contact your dental team if you notice:

• Bleeding gums when brushing or cleaning between teeth.
• Red, swollen or sore gums.
• Persistent bad breath.
• Loose teeth.
• Receding gums.

Gum disease is often painless at first, so regular check-ups are important.

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How to protect your oral health and lower your risk

You can support both your oral and general health by:

• Brushing for 2 minutes last thing at night and at least once more during the day with fluoride toothpaste.
• Using an electric toothbrush or an adapted toothbrush handle if gripping a toothbrush is difficult.
• Cleaning between your teeth every day.
• Not ignoring bleeding gums – this is a sign they need better cleaning.
• Visiting your dentist or hygienist regularly.
• Eating a balanced diet and limiting sugary foods and drinks.
• Not smoking.

Good daily oral care helps reduce inflammation in the mouth and supports the health of blood vessels throughout the body.

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Summary

Healthy gums are part of a healthy body.

Looking after your mouth may help reduce inflammation and is one of many steps that can support your heart and brain health.