TUESDAY, Oct. 17 (HealthDay News) -- A new study finds that at least 1 in every 4 smokers will develop progressive and incurable chronic obstructive pulmonary disease (COPD), a much higher risk than previously believed. COPD is a respiratory disease that results in blocked air flow to the lungs and grows progressively worse. For this study, published online in the journal Thorax, researchers at Hvidovre Hospital analyzed data on 8,000 men and women, ages 30 to 60. All were monitored for 25 years as part of the Copenhagen City Heart Study. At the start of the study, all the participants'...