In addition to the above effects, quercetin still has the anti-inflammatory functions by blocking the secretion of IL-6, IFN-γ, and TNF-α and increasing the decreased ratio of Bcl-2/Bax apoptotic proteins induced by lipopolysaccharide (LPS) revealing the putative value in preventing miscarriage caused by bacterial infection [36–38]. This evidence concerns the gene IL6 and bacterial infectious disease.