BMAL1 and type 2 diabetes mellitus: Bmal1 deletion abolishes 24 h activity patterns (Ray et al., 2020), leading to circadian rhythm disorders and aging‐related diseases, such as glycolipid metabolism disorders including T2DM (Marcheva et al., 2010), and neurodegenerative diseases (Musiek & Holtzman, 2016), as presented in Figure 1.