TAS1R3 and type 2 diabetes mellitus: Studies have shown that taste receptor TAS1R1/TAS1R3 can mediate the signal transduction induced by aliphatic amino acids (Tolhurst et al., 2012), and the imbalance of branched‐chain amino acids (BCAAs), as a pathological marker, may lead to the occurrence of obesity and T2DM and other endocrine diseases (Giesbertz & Daniel, 2016; Le Couteur et al., 2020; Lynch & Adams, 2014).