https://www.healthcentral.com/article/does-lack-of-vitamin-d-cause-asthma
Asthma

Does Lack of Vitamin D Cause Asthma?

    John Bottrell

    John Bottrell

    John Bottrell is a registered Respiratory Therapist. He wrote for HealthCentral as a health professional for Asthma and Chronic Obstructive Pulmonary Disease (COPD).