Answers are grounded in this paper and cite their sources.
Our meta-analysis found that lower maternal vitamin D during pregnancy was associated with an increased risk of childhood eczema but was not associated with childhood asthma or wheeze. The role of maternal vitamin D as an important protective factor for the development of childhood eczema remains to be elucidated.
No takes yet. Share an insight, caveat, or question.
Wei et al. (2016) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: