Vitamin D supplements may have the risk of suffering a severe asthma attack, claims a study.If clubbed with medicines, it can act as a source of immediate relief for the ones who suffer from a severe asthma attack. Asthma deaths arise primarily during episodes of acute worsening of symptoms, known as attacks or 'exacerbations', which are commonly triggered by viral upper respiratory infections, researchers said.

Vitamin D is thought to protect against such attacks by boosting immune responses to respiratory viruses and dampening down harmful airway inflammation, they said. Researchers from a University in the UK analysed data from 955 participants in seven randomised controlled trials, which tested the use of vitamin D supplements.The study, published in The Lancet found that vitamin D supplementation resulted in a 30 percent reduction in the rate of asthma attacks requiring treatment…