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Home NEWS Science News Health

Healthy omega-3 fats may slow deadly pulmonary fibrosis, research suggests

Bioengineer by Bioengineer
January 2, 2024
in Health
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Could healthy fats found in nuts and fish slow the progression of potentially deadly lung scarring known as pulmonary fibrosis and delay the need for lung transplants? 

Healthy omega-3 fats may slow deadly pulmonary fibrosis, research suggests

Credit: UVA Health

Could healthy fats found in nuts and fish slow the progression of potentially deadly lung scarring known as pulmonary fibrosis and delay the need for lung transplants? 

UVA pulmonary researchers looked at the association between blood-plasma levels of omega-3 fatty acids – the heart-healthy fats found in foods such as salmon and flaxseeds – and the progression of pulmonary fibrosis, as well as how long patients could go without needing a transplant. The researchers found that higher levels of omega-3 were associated with better lung function and longer transplant-free survival.

While more research is needed, the researchers say their findings warrant clinical trials to determine if interventions that raise omega-3 levels could be a useful tool to improve outcomes for patients with pulmonary fibrosis and other chronic lung diseases.

“We found that higher levels of omega-3 fatty acids in the blood, which reflects several weeks of dietary intake, were linked to better lung function and longer survival,” said researcher John Kim, MD, a pulmonary and critical care expert at UVA Health and the University of Virginia School of Medicine. “Our findings suggest omega-3 fatty acids might be a targetable risk factor in pulmonary fibrosis.”

Omega-3 and Pulmonary Fibrosis

Omega-3 fatty acids have already been linked to a host of health benefits. Studies have suggested, for example, that they may lower the risk of heart disease, stroke-causing blood clots, breast cancer and other cancers, Alzheimer’s disease and dementia. 

Kim and his colleagues wanted to determine if omega-3s could play a protective role in interstitial lung disease, a group of chronic lung diseases that can lead to pulmonary fibrosis. A growing problem around the world, pulmonary fibrosis is an irreversible condition that leaves the lungs unable to exchange oxygen and carbon dioxide properly. This can cause patients to become short of breath, weak, unable to exercise and a host of other symptoms. Smoking is a major risk factor.

The researchers looked at anonymized data on patients with interstitial lung disease collected in the Pulmonary Fibrosis Foundation Registry, as well as information volunteered by patients at UVA Health and the University of Chicago. 

In total, the scientists reviewed information on more than 300 people with interstitial lung disease. Most were men (pulmonary fibrosis is more common in men than women), and most suffered from “idiopathic” pulmonary fibrosis, one of the conditions that fall under the banner of interstitial lung disease.

The researchers found that higher levels of omega-3 fatty acids in the blood plasma were associated with better ability to exchange carbon dioxide and longer survival without the need for a lung transplant. This did not vary much regardless of smoking history or whether the patients had cardiovascular disease.

“Higher levels of omega-3 fatty acids were predictive of better clinical outcomes in pulmonary fibrosis,” Kim said. “These findings were consistent whether you had a history of cardiovascular disease, which suggests this may be specific to pulmonary fibrosis.”

The doctors say additional research is needed to understand just how omega-3s could be having this protective benefit. They are calling for clinical trials and more mechanistic studies to obtain additional insights and determine if omega-3 fatty acid drugs or dietary changes could improve patient outcomes.

“We need further research to determine if there are specific omega-3 fatty acids that may be beneficial and, if so, what are their underlying mechanisms,” Kim said. “Similar to other chronic diseases, we hope to determine whether nutrition related interventions can have a positive impact on pulmonary fibrosis.” 

Findings Published

The researchers have published their findings in the scientific journal Chest. The research team consisted of Kim, Shwu-Fan Ma, Jennie Z. Ma, Yong Huang, Catherine A. Bonham, Justin M. Oldham, Ayodeji Adegunsoye, Mary E. Strek, Kevin R. Flaherty, Emma Strickland, Inemesit Udofia, Joshua J. Mooney, Shrestha Ghosh, Krishnarao Maddipati and Imre Noth. Noth has received personal fees from Boehringer Ingelheim, Genentech and Confo unrelated to the work. He is also seeking to patent transcriptomic prognostics in idiopathic pulmonary fibrosis. A full list of the authors’ disclosures is included in the paper.

Kim’s work was supported by a Pulmonary Fibrosis Foundation Scholars Award and grant K23-HL-150301 from the National Institutes of Health’s National Heart, Lung and Blood Institute (NHLBI). The research was also supported in part by the National Center for Research Resources, grant S10RR027926.  

To keep up with the latest medical research news from UVA, subscribe to the Making of Medicine blog at http://makingofmedicine.virginia.edu.

 



Journal

CHEST Journal

DOI

10.1016/j.chest.2023.09.035

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