Researchers found that higher vitamin K1 intake from leafy greens like spinach and kale was associated with a 16% lower likelihood of COPD over ten years.
https://www.foxnews.com/health/leafy-greens-could-help-protect-lungs-study-suggests
https://www.foxnews.com/health/leafy-greens-could-help-protect-lungs-study-suggests