CR – mouse, rat (Niemann et al. 2022); FMD – mouse, female (Mishra et al. 2021); TF – mouse, wild type and Fgf21-/-# (Kawakami et al. 2022); TRF – mouse, hypertension models (Sims et al. 2022)# 24 h one-off fast. Here, FGF21 is linked to Hypertension.