Is your oral health linked to cardiovascular disease?
Poor oral health is clearly associated with more cardiovascular disease, but whether the relationship is one of cause and effect has not yet been established. Good oral care is worthwhile in any case; whether it lowers your heart risk, we cannot yet say with certainty.
Gum disease (periodontitis) is associated with a higher risk of cardiovascular disease across all 41 groups of studies that were analysed together. The risk figures found vary considerably: the chance of cardiovascular disease is roughly 1.2 to 4.4 times higher in people with periodontitis compared with people without it. That is a wide range, which reflects how differently the individual studies were set up.
Whether that link is also one of cause and effect has not yet been established. Studies that use genetic methods to distinguish cause from effect found no evidence that periodontitis itself causes hardening of the arteries. Treating gum disease does improve certain blood markers associated with heart risk, but whether doing so actually prevents heart attacks has not been shown.
One possible explanation for the link is that gum disease triggers a reaction throughout the whole body. Bacteria from the gums can enter the bloodstream and contribute to the build-up of deposits in the artery walls. Mouth bacteria also produce waste products that interfere with how the body handles cholesterol and encourage fatty deposits to form in the artery walls. That last point is, for now, based mainly on animal studies and experiments with cells.
Raised blood levels of antibodies against specific gum bacteria are also associated with coronary heart disease. The added risk found is modest: a combined estimate across several studies gives an odds ratio of roughly 1.23 to 1.25. Those antibodies may be interesting as an early signal of risk, but the way they are measured has not yet been standardised.
Finally, tooth loss, a common consequence of severe periodontitis, is also associated with more cardiovascular disease. Whether that is a direct link, or whether both problems share the same underlying risk factors such as smoking, diabetes and age, has not yet been definitively answered.
This answer draws on a large overarching analysis of 41 earlier groups of combined studies, supplemented by several individual reviews and studies. The link between oral health and heart disease is therefore well documented, but virtually all the evidence comes from following people over time, without anyone being randomly assigned to a treatment group. That makes it difficult to separate cause from effect. Genetic methods specifically designed to test for causation found no causal link. The researchers themselves point to methodological limitations and urge caution when interpreting the findings.
How can poor oral health and periodontitis raise your blood pressure?
Gum disease is clearly associated with higher blood pressure, and there is good evidence that it genuinely contributes to it. Intensive gum treatment can lower blood pressure, but that effect has not been confirmed across all studies; taking good care of your teeth remains worthwhile in any case.
What is the link between gum disease and heart disease?
There is a consistent association between gum disease and a higher risk of heart disease, although it has not been proven that one causes the other. Taking good care of your gums is sensible regardless, but do not expect any guaranteed protection against heart disease from doing so.
Does unhealthy gums affect my heart?
People with serious gum disease show clearly higher risks of heart attack, stroke and premature death in large-scale research. Whether that association is causal is not yet certain, but keeping your gums healthy is worthwhile regardless.
Does sitting all day increase your risk of heart problems?
Sitting a lot increases your risk of heart failure and heart-related mortality, even if you exercise regularly. Just 30 minutes less sitting per day produces a measurable improvement, so try to break up long periods of sitting regularly.
Does my heart rate variability (HRV) tell me anything about my health?
A higher HRV is associated with better health and greater resilience. Slow breathing is the most accessible and best-supported way to work on this yourself.
Are erectile problems an early sign of heart disease?
Erectile problems caused by poor blood flow precede a heart attack or stroke by an average of 2 to 5 years. If you have this type of complaint, also have your cardiovascular risk checked by your doctor.