Infections and Heart Disease

New studies suggest that certain infections may set the stage for heart disease by triggering chronic inflammation of blood vessel walls.

Here's how it could happen:

• An infection attracts white blood cells to the infected area.
• These cells secrete substances into the bloodstream that can damage arterial walls and cause scar tissue to form.
• Scar tissue and fat develop into thick layers of artery-plugging plaque.

Infections associated with heart disease include:

Periodontal disease: Infection of the gums and tissues around your teeth can produce toxic substances that may trigger the formation of arterial plaque. One study found men with the worst gum disease were twice as likely as those with the least to die of heart disease and 3 times as likely to suffer stroke.

Bacterial infections: Research indicates that chronic respiratory infections, especially those caused by Chlamydia pneumonia, may be linked to heart disease.

Viral infections: Certain flu-like viruses have been detected in the arterial plaque of patients with cardiovascular disease.

Infection-control measures that may help protect your heart:

• Each day brush your teeth at least twice and floss once.
• Schedule dental checkups every 6 months.
• Wash your hands when handling food and after using the bathroom.
• Eliminate tobacco, which causes both gum and heart disease.
• Contact your provider promptly for treatment of possible infection.
• Get all recommended vaccinations; future research may indicate which shots help prevent heart disease.

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