COPD Foundation Apr 23 2026 Consuming legumes and soy-based foods may help improve symptoms of chronic obstructive pulmonary disease (COPD) by reducing inflammation and irritation, according to a new study in the March 2026 issue of Chronic Obstructive Pulmonary Diseases: Journal of the COPD Foundation , a peer-reviewed, open access journal. COPD , which includes emphysema and chronic bronchitis, is a progressive, inflammatory lung disease that affects more than 30 million Americans and is the