SIRT1 and cancer: EGCG inhibited the growth and proliferation of nasopharyngeal carcinoma (CNE‐2 and 5‐8F) cells by inducing apoptosis (cell death) through the downregulation of an NAD+‐dependent protein deacetylase, sirtuin 1 (SIRT1) that plays an important role in cancer cell metabolism (Jiang et al. 2022).