Major asthma breakthrough as scientists discover root cause of the condition - and say a new treatment is less than 5 years away

Scientists claim to have found the root cause of asthma, a breakthrough which could pave the way for a new treatment within five years. 

Most of the millions of asthma sufferers are able to regulate their symptoms with inhalers, but a minority - about 5 per cent of patients - do not respond to any treatment.

Now scientists have found a protein within the airways which they believe triggers all asthma attacks.

Read more: DailyMail