Background Nutrient trials differ from drug trials because participants have varying
circulating levels at entry into the trial. Objective We sought to study the effect of a vitamin D …

Importance Asthma and wheezing begin early in life, and prenatal vitamin D deficiency has
been variably associated with these disorders in offspring. Objective To determine whether …

Background Childhood asthma developmental programming is complex. Maternal asthma is
a strong risk factor for childhood asthma, whereas vitamin D (VD) has emerged as a …

There is intense interest in the role of vitamin D in the development of asthma and allergies.
However, studies differ on whether a higher vitamin D intake or status in pregnancy or at …

Background We recently published two independent randomized controlled trials of vitamin
D supplementation during pregnancy, both indicating a> 20% reduced risk of …

Background Vitamin D deficiency has been linked to an increased risk of asthma. This study
aimed to quantify the effect of early life vitamin D status on asthma and wheeze later in life …

Background We previously reported the results of a trial of prenatal vitamin D
supplementation to prevent asthma and recurrent wheeze in young children, which …

Background: Vitamin D deficiency and asthma are common at higher latitudes. Although
vitamin D has important immunologic effects, its relation with asthma is unknown. Objective …

METHODS: Participants were 1,306 mother-child pairs in Project Viva, a prospective “pre-
birth” cohort study in Massachusetts. We assessed maternal intake of vitamin D from a …

Background High prenatal vitamin D status has been linked to decreased risk of atopic
diseases in early childhood, but whether such relations persist until adulthood has not been …