Table 1.

Effects of Vitamin D on allergies.

Allergic Disease	Correlation with Vitamin D	Ref.
Atopic disease	Higher values of 25OH-D3 in patients with mild disease compared with patients with moderate or severe disease	[27]
	Reduced VD levels in Atopic Disease patients	[39]
	Vitamin D supplementation during winter months had favorable effects on Atopic Disease symptoms	[40]
Food Allergy	Presence of 25OH-D3 serum values of less than 15 ng/mL	[34]
Chronic Urticaria	Reduced Urticaria Symptoms Severity scores after D3 supplementation	[37]
Chronic Spontaneous urticaria	Reduced total urticaria score after vitamin D3 administration	[38]
Asthma	Presence of 25OH-D3 serum values of less than 20 ng/mL (3.4%), and of 20–30 ng/mL (24.6%)	[41]
	Inverse correlation between maternal 25OH-D3 values and inhaled steroids	[42]
	Vitamin D supplementation during winter months reduced the frequency of asthma attacks	[43,44]
Childhood wheezing	Correlation between high maternal 25OH-D3 values with reduced childhood wheezing	[45,46]