People with both cavities and gum disease may face a higher risk of ischemic stroke , according to a study published on October 22, 2025, in Neurology ® Open Access, an official journal of the American Academy of Neurology. The study does not prove that poor oral health causes strokes; it only shows an association.

Ischemic strokes are the most common type of stroke and occur when a clot or blockage reduces blood flow to the brain, depriving it of oxygen and nutrients.

Cavities are holes in the tooth enamel caused by sugary or starchy foods or factors such as poor oral hygiene or genetics. Gum disease, usually caused by poor oral hygiene, is an inflammation or infection of the gums and jawbone. It can lead to tooth loss.

“We found that people with both cavities and gum disease h

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