Take Care of Your Gums for the Sake of Your Lungs

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Nearly 16 million Americans suffer from the respiratory disorder Chronic Obstructive Pulmonary Disease (COPD), making it the sixth leading cause of death in the U.S. But the results of a new study, described in this month's Journal of Periodontology, suggest that simply taking better care of their gums might help COPD patients to stave off progression of the disease.

Oral biologists from the University of Buffalo studied the gums and lungs of 13,792 patients. Those patients with periodontal disease, they found, had a one-and-a-half times greater risk of COPD than did those with sound gums. Moreover, lung problems worsened with declining oral health. "We know that the onset and progression of COPD is dependent on smoking, and that repeated bacterial infections can worsen the lung disease," says team member Frank A. Scannapieco. "It is possible that periodontal bacteria could travel to the lungs through saliva or normal breathing and in some way promote lung infection. Another possibility is that the inflammation caused by periodontal disease may contribute to inflammation of the lining of the lung airway, which limits the amount of air that passes to and from the lungs."

Scannapieco notes that although failure to brush ones teeth won't lead to lung disease, "if you already have lung disease, taking care of your teeth and gums is especially important."

Kate Wong is an award-winning science writer and senior editor for features at Scientific American, where she has focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for nearly 30 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home to the shores of Kenya’s Lake Turkana in search of the oldest stone tools in the world, as well as to Madagascar on an expedition to unearth ancient mammals and dinosaurs, the icy waters of Antarctica, where humpback whales feast on krill, and a “Big Day” race around the state of Connecticut to find as many bird species as possible in 24 hours. Wong is co-author, with Donald Johanson, of Lucy’s Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow her on Bluesky @katewong.bsky.social

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