IGHE and asthma: There was no relation between blood 25-OH vitamin D levels and the time from asthma diagnosis; number of attacks, inhaled steroid usage, anti-inflammatory medication (either ICS or leukotriene inhibitor) usage or systemic steroid usage in the previous year; atopy in the family, skin prick test positivity, 25-OH vitamin D usage in first year of life and the IgE level in asthma patients.