Vitamin D supplements 'could help with asthma'
Taking vitamin D supplements could significantly cut the risk of severe asthma attacks for some sufferers, say health experts.
Patients who suffer from severe attacks were at a lower risk of an attack and less likely to need hospital treatment if they had been taking regular doses of the vitamin, trials carried out by a Cochrane Review showed.
They were also less likely to need treatment with steroid tablets.
Asthma is a chronic respiratory disease affecting around 300 million people worldwide, causing wheezing, coughing, chest tightness and shortage of breath.
Vitamin D in children and adults has been linked to lowering the risk of asthma attacks.
Evidence suggests it may help prevent respiratory infections, such as the common cold, which can lead to attacks in patients.
Cochrane is a not-for-profit network of health professionals.