Predicting ambient ultraviolet from routine meteorological data; its potential use as an instrumental variable for vitamin D status in pregnancy in a longitudinal birth cohort in the UK

摘要

Background Maternal vitamin D status in pregnancy has been postulated to have important effects on intrauterine development. UVB radiation is not commonly measured but is the prime determinant of circulating 25-hydroxyvitamin-D [25-(OH)D] and is highly dependent on regional weather including cloud cover, ozone and sunshine hours.