A new study of nearly 18,000 children from 4 to 12 years old by West Virginia University School of Medicine in the USA, showed that the development of asthma in childhood is directly linked to imbalanced diet and inadequate exercise.

http://www.physorg.com/news203860293.html
http://timesofindia.indiatimes.com/life-style/health-fitness/health/Imbalanced-diet-a-cause-asthma/articleshow
/6571537.cms