Recent research highlights the nutritional benefits of leafy green vegetables like spinach, kale, and broccoli on lung health. There are two main types of vitamin K found in foods. Vitamin K1, primarily found in vegetables, plays a significant role in blood clotting. Vitamin K2, present in fermented foods, certain dairy products, eggs, and meats, assists in calcium regulation and bone health.
Researchers at Edith Cowan University in Australia examined the correlation between dietary intake of vitamins K1 and K2 and conditions such as chronic obstructive pulmonary disease (COPD), asthma, and overall lung function.
Leafy green vegetables are high in vitamin K1, a nutrient associated with enhanced lung health.
Chronic respiratory diseases, including COPD and asthma, are significant noncommunicable diseases globally. In 2019, these conditions were the third leading cause of death, responsible for 4 million fatalities and impacting 454.6 million people worldwide. Although treatments are available for managing asthma and COPD, there is no cure, emphasizing the need for preventive strategies.
COPD’s leading cause is smoking, according to the Mayo Clinic. Other irritants such as dust, chemicals, and pollution also contribute to its development.
The researchers analyzed data from 179,062 participants over approximately 10 years. Their findings indicated that higher dietary vitamin K1 intake correlated with improved lung function and a reduced COPD rate. Specifically, participants with increased vitamin K1 intake showed a 16% lower likelihood of developing COPD. This effect was particularly noticeable in smokers and individuals with high-risk occupational exposure.
In contrast, vitamin K2 intake did not show a reduction in COPD rates. Additionally, the study did not observe any association between the intake of vitamins K1 or K2 and asthma.
Associate professor Marc Sim, part of the research team, suggested that vitamin K might activate a protein helping to maintain lung tissue elasticity and preventing damage. However, the study was observational and cannot conclusively prove that vitamin K1 directly decreases COPD risk, only indicating that higher intake is linked with better lung health.
Increasing leafy green vegetable consumption is a practical way to enhance vitamin K1 intake.
Other vitamin K1-rich foods include collard greens, Swiss chard, Brussels sprouts, and turnip greens. Consuming additional servings of these vegetables is an achievable strategy to boost vitamin K1 levels, as noted by Chengfeng Li, a study researcher.
Teresa Mull is a freelance writer contributing to Fox News Digital’s Lifestyle team.