In particular, eating fruit such as apples is thought to improve lung function, which may help children with asthma control their symptoms.

BBC: Apples

In trials involving 4, 300 patients, the medicine has been shown to reduce asthma attacks and hospitalisations, and to help improve lung function and quality of life.

BBC: NEWS | Health | New drug for hard-to-treat asthma

Not only did it improve patients' lung function, it lowered the amount of salt in their sweat, a sign that it may combat CF at its biological root.

FORBES: Magazine Article

Professor John Dark, head of the heart and lung transplant unit at the Freeman Hospital, Newcastle Upon Tyne, told BBC News Online that the solution used by the Swedish team to preserve the lung had probably also helped to improve its function.

BBC: Lung transplant breakthrough