A daily dose of Vitamin D halves the risk of severe asthma attacks, a new study has shown.
We know that asthma has increased in recent decades in incidence. We also know that Vitamin D deficiency has increased in recent decades – we’re even seeing rickets make a small comeback.
Generally we’re told that the increase in asthma is because of the pollution of modern life – odd in a country that is becoming cleaner by the hour. So, how much of the increase is really due to the Vitamin D change?