Smoking during pregnancy tied to kids’ asthma

NEW YORK (Reuters Health) – Children whose mothers smoked during pregnancy may have an increased risk of asthma – even if they were not exposed to secondhand smoke after birth, a large study of European children suggests. Many studies have found that secondhand smoke may worsen kids' asthma symptoms, or possibly raise their risk of developing the lung disease in the first place. But it's been less clear if smoking during pregnancy is linked to asthma. Most studies have not been able to tease out the possible effects from those of secondhand smoke after birth. …