Asthma and obesity: the dose effect.

Asthma is one of the most common chronic illnesses in the world, affecting an estimated 300 million people. Globally, the prevalence of asthma has continued to spread as economic improvements in developing countries create a population trend toward urbanization and adoption of a western lifestyle. Research supports an association between obesity and asthma. Only by making weight management a priority in the treatment of asthma can the rising prevalence of both diseases be hindered and global health improved.