It has been shown to affect several signal transduction pathways such as Wnt/β‐catenin, mechanistic target of rapamycin (mTOR) complex 1 (mTORC1), signal transducer and activator of transcription 3 (STAT3), nuclear factor kappa‐light‐chain‐enhancer of activated B cells (nuclear factor‐κB; NF‐κB) and Notch pathways, all indicating its potential to treat conditions such as cancer (summarized in Table 1), chronic medical diseases, and bacterial and viral infections. This evidence concerns the gene STAT3 and viral infectious disease.