Don’t get me wrong, wrist-based heart rate tracking on smartwatches has improved loads over the years, but if you do anything ...

Among patients with opioid overdose, bradycardia on initial vital signs was associated with a higher likelihood of xylazine ...

You track your VO2 max and working heart rate, but this underrated biometric may tell you more about your heart and long-term ...

Researchers have identified bradycardia—an abnormally low heart rate—as a symptom of xylazine-opioid overdose. This ...

A US federal appeals court has handed Apple a significant victory in its long-running legal dispute with AliveCor. Here are all the details.