Study Links Leafy Greens to Improved Lung Health and Lower COPD Risk

A major study from Australia's Edith Cowan University indicates that consuming leafy green vegetables may help protect against chronic lung diseases.

Researchers analyzed data from over 179,000 participants over a decade. They found that higher intake of vitamin K1, abundant in spinach, kale, and broccoli, was linked to better lung function and a 16% lower likelihood of developing chronic obstructive pulmonary disease (COPD).

The effect was most pronounced in smokers and individuals in high-risk occupations. No similar benefit was observed for vitamin K2 or for asthma.

Scientists theorize vitamin K may activate proteins that keep lung tissue flexible. They emphasize the finding is observational, showing association rather than direct causation.

Adding just one serving of leafy greens daily is a simple dietary strategy to boost K1 intake. Other rich sources include collard greens and Brussels sprouts.