哮喘是呼吸道慢性炎症状态,表现为不明原因的可变性的气道狭窄和血浆IgE水平升高。有一种假说认为维生素D3的代谢产物1,25-二羟-维生素D3会抑制树突状细胞的成熟,持续产生Th1细胞。早期补充维生素D可以诱发后期的过敏反应。由于几乎所有西方国家 Asthma is a chronic inflammatory condition of the respiratory tract that manifests as an unexplained variability of airway stenosis and elevated plasma IgE levels. There is a hypothesis that 1,25-dihydroxyvitamin D3, a metabolite of vitamin D3, inhibits the maturation of dendritic cells and continues to produce Th1 cells. Early vitamin D supplementation can induce late allergic reactions. Because almost all Western countries