Breathe Better With Vitamin K

You know about vitamin K for your bones. You know your blood needs it to clot properly. But did you know you need it to breathe easy?

This study looked at a marker of vitamin K in 4,092 people between the ages of 24 and 77 and then asked them to breathe into a spirometer and to answer a questionnaire on their respiratory health.

People with low levels of vitamin K were able to breathe out less air in one second (forced expiratory volume) and had a lower total volume of air that they could breathe in one forced breath (forced vital capacity). These results suggest that people with low vitamin K have poorer lung function.

So, did this impaired lung function affect their lives? People with low vitamin K were more than twice as likely to report chronic obstructive lung disease (COPD), 44% more likely to say they had asthma and 81% more likely to report wheezing.

This may be the first study in a large population to show that getting enough vitamin K is crucial for healthy lungs.

ERJ Open Research 2023; DOI: 10.1183/23120541.00208-2023

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