Rumour: Resting heart rate is predictive of cardiovascular disease (CVD) related mortalities only.
Truth: This is false. Resting heart rate can be used to predict both CVD related mortalities, as well as all-cause mortalities, where the primary cause of death is not related to cardiovascular disease. It has been suggested that an elevated resting heart rate is a result of an autonomic tone imbalance which can trouble different systems of the body, including ones responsible for inflammation, metabolism, and neurologic processes. Learn more about resting heart rate and its ability to predict mortality here.