Bartolomaeus et al. observed that in mice with hypertension induced by angiotensin (Ang) II, propionate attenuated the response of various T cells to Ang II, such as Th17 and memory T-cell reduction, thereby lowering the blood pressure level; this process was confirmed to be Treg-dependent (Bartolomaeus et al., 2019). The gene discussed is AGT; the disease is hypertensive disorder.