However, “we would argue that clinicians should consider the potential benefits of a healthy diet in promoting lung health, and advocate optimizing intake of fruits and vegetables, especially in smokers who are unable to stop smoking,” said the authors of an editorial accompanying the study.
Smoking is the main risk factor for COPD. This term applies to a group of breathing conditions, including emphysema, caused by the narrowing of airway passages.
The new 13-year study involved 44,000 Swedish men between the ages of 45 and 79. Nearly two-thirds had smoked at some point. Roughly one-quarter still smoked, while nearly four in 10 said they had never smoked.
The men filled out food questionnaires and answered questions about smoking and other behaviors.
Over the study period, more than 1,900 new cases of COPD developed.