Bleeding gums are easy to ignore. They rarely hurt, and it is tempting to put them down to brushing too hard. But gum disease is one of the most common causes of tooth loss in adults, and a growing body of research links it with conditions elsewhere in the body, including diabetes and heart disease. This article explains what that research says, what it does not say, and what it means for you.
Gum disease starts when plaque builds up along the gum line. The gums become inflamed, red and prone to bleeding. This early stage is called gingivitis, and it can usually be reversed with good cleaning at home and professional help from a hygienist. We explain it in more detail in All you need to know about gingivitis.
If it is left untreated, inflammation can spread below the gum line and begin to damage the bone and tissue that hold the teeth in place. This is periodontitis. Pockets form between the gums and teeth, teeth can loosen, and in time some may be lost.
The connection between gum disease and diabetes is one of the best studied. People with diabetes, particularly when blood sugar is poorly controlled, are more likely to develop gum disease and tend to have it more severely. There is also evidence that the relationship works in the other direction, with untreated gum disease making blood sugar harder to control.
Recent research has looked at what happens when the two conditions occur together. A 2025 analysis published in the British Dental Journal found a higher risk of cardiovascular problems in people with type 2 diabetes who also had periodontitis than in those without it.
The NHS notes that gum disease has been linked with other health problems, including heart disease and stroke. One explanation researchers are investigating is inflammation: long-standing inflammation in the gums may contribute to inflammation elsewhere in the body.
It is important to be clear about what this means. Studies show an association, which means the conditions are found together more often than chance would explain. That is not the same as proving that gum disease causes heart disease, and researchers are still working out how the two are connected. What is clear is that healthy gums are part of good general health, and there is no downside to looking after them.
If you notice bleeding when you floss, our article on common causes of bleeding gums when flossing covers the usual reasons.
Keep up regular hygienist visits. Professional cleaning removes the hardened plaque, called tartar, that brushing cannot shift. Our hygiene team will also show you the cleaning techniques that suit your mouth.
Tell us about your health. If you have diabetes, a heart condition or are taking medicines, let us know. It helps us judge your risk and plan your care, and we may suggest seeing you more often.
Do not wait for pain. Gum disease is often painless until it is advanced, which is why regular check-ups matter even when nothing feels wrong.
See a specialist if it has progressed. Periodontitis is treated by periodontists, dentists with specialist training in the gums and the bone that supports the teeth. Our practice has two specialist periodontists. We explain what happens at a first visit in Seeing a periodontist: what happens at your first appointment.
If your gums bleed, or it has been a while since your last check-up or hygiene visit, we can help. Contact us online or call the practice on 01625 599 001.
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