The efficacy of vitamin D supplementation in the management of childhood asthma: a systematic review and meta-analysis (opens in new tab)

BackgroundChildhood asthma is a major public health concern. Current evidence regarding vitamin D supplementation in childhood asthma remains inconsistent, particularly with respect to pulmonary function. This study comprehensively evaluates the role of vitamin D supplementation in childhood asthma, with a particular focus on lung function.MethodPubMed, EMBASE, Web of Science, and the Cochrane Library were searched through October 31, 2025 for RCTs. Data were extracted and analyzed using FEV1...