Staying Healthy

Toothbrushing tied to lower pneumonia rates in hospitalized patients

Research we're watching

By , Executive Editor, Harvard Women's Health Watch
  • Reviewed by Toni Golen, MD, Editor in Chief, Harvard Women's Health Watch; Editorial Advisory Board Member, Harvard Health Publishing; Contributor

closeup photo of the face of a woman as she brushes her teeth

Seriously ill hospitalized patients whose teeth are brushed at least twice daily are far less likely to develop pneumonia, the most common hospital-acquired infection, a new analysis suggests.

The study, published online Dec. 18, 2023, by JAMA Internal Medicine, reviewed 15 earlier analyses involving a total of nearly 2,800 patients. Fourteen studies were conducted in hospital intensive care units (ICUs), while 13 involved patients on ventilators. Patients whose teeth were brushed twice or more daily were 33% less likely to develop hospital-acquired pneumonia than those without a toothbrushing regimen. Patients whose teeth were brushed also needed ventilators for less time, were able to leave the ICU more quickly, and were less likely to die in the ICU than those without a toothbrushing regimen.

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About the Author

photo of Maureen Salamon

Maureen Salamon, Executive Editor, Harvard Women's Health Watch

Maureen Salamon is executive editor of Harvard Women’s Health Watch. She began her career as a newspaper reporter and later covered health and medicine for a wide variety of websites, magazines, and hospitals. Her work has … See Full Bio
View all posts by Maureen Salamon

About the Reviewer

photo of Toni Golen, MD

Toni Golen, MD, Editor in Chief, Harvard Women's Health Watch; Editorial Advisory Board Member, Harvard Health Publishing; Contributor

Dr. Toni Golen is a physician specializing in obstetrics and gynecology, practicing in Boston. Dr. Golen completed her residency training at George Washington University Medical Center in 1995, and is an associate professor at Harvard Medical … See Full Bio
View all posts by Toni Golen, MD

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