Many researchers believe that Vitamin D likely plays a role in allergies with a recent study examining the associations between early-life Vitamin D levels and allergies.
The study considered a diverse population and hoped to prove Vitamin D levels are associated with higher or lower allergy risks. It’s been known that areas closer to the equator have lower rates of childhood food allergies. These areas also have higher average amounts of Vitamin D among children living there.
Higher levels of D levels in newborns corresponded with lower allergy-related outcomes later.
The study, published in the Journal of Allergy & Clinical Immunology (JACI), measured 25 Vitamin D types in stored blood samples from pregnancy, cord blood, and blood taken at two years of age. Medical records were then examined to determine allergy-related diagnosis such as incidence of eczema and allergen-specific immunoglobulin levels as well as diagnosis of asthma between ages 3 and 6.
The study found that prenatal and cord blood D levels were associated with some allergy outcomes, with higher levels of D indicating fewer allergies later. A slightly stronger association was noted in white children versus other races.
The conclusion of the study is that more research into the links between Vitamin D levels and allergy is needed. Vitamin D is known to be associated with nearly every cell in the body, yet little is known about its impacts on health beyond broad terms. The JACI authors note that there is no consensus among scientists as to what levels of Vitamin D are sufficient or how much should be given in supplementation, which complicates research further.