Vitamin D Deficiency may be Important in Causing Allergy and Asthma Instability

Vitamin D deficiency is found in mainly northern climates and these geographical areas correspond to areas where there are a large numbers of patients with hayfever, asthma, eczema and food allergy. Serving a population in the Northeast of the United States, we commonly see vitamin D deficiency.In a study of over 1000 children with mild asthma those who were Vitamin D deficient had an increased risk of a major asthma attack over a 4 year follow up period.