Zhao Y, et al. - In view of the association of elevated resting heart rate (RHR) with the risk of type 2 diabetes mellitus (T2DM), researchers investigated whether a change in RHR (ΔRHR) is associated with incident T2DM. During 2007-2008, they enrolled a total of 12,155 non-T2DM participants ≥18 years old and followed them up during 2013-2014. Subtracting the baseline RHR from the RHR value at 6-year follow-up, they calculated ΔRHR. As compared with ΔRHR of 0 beats/min, RHR increment led to a significant increase in the adjusted risk of T2DM and RHR reduction led to the risk reduction. This suggests the utility of RHR as a non-invasive clinical indicator for interventions aiming to reduce incident T2DM in the general population.