Atherosclerosis and Your Toothbrush: The Hidden Link

Atherosclerosis, the dangerous hardening of arteries, may be linked to an unlikely source: your old toothbrush. Dental experts are drawing a clear line from poor oral hygiene to this serious cardiovascular condition.
The connection is inflammation. A chief clinical officer explains that “chronic gum inflammation… can cause arteries to stiffen and narrow.” This inflammation begins in the mouth when bacteria form plaque, but it doesn’t stay there.
The mouth, home to 700 bacterial species, is a potential source of systemic infection. When plaque triggers inflammation, it allows bacteria and inflammatory molecules to enter the bloodstream. From there, they can travel to the heart and contribute to the plaque buildup in the arteries.
This is why individuals with untreated gum disease are almost twice as likely to suffer from heart disease. Their bodies are constantly fighting a low-grade infection, which wears down the heart’s defenses over time.
To protect your arteries, start with your gums. The primary rule is to replace your toothbrush every three months. Old, frayed bristles are ineffective at removing the plaque that causes this dangerous inflammation. This simple change is a powerful step in preventive heart care.