When you have atrial fibrillation, the two upper chambers of your heart (atria) don't beat in sync with the two lower chambers (ventricles). This makes your heart beat out of rhythm and sometimes very ...

In fight-or-flight circumstances, you’d do well to relieve yourself of any encumbrance. That’s what calcium channels do in your heart cells. As part of a cascade of adrenalin-instigated molecular ...

Towards the end of 2019, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) appeared on the scene, and practically shut down the world for the next several months. Since then, a slow and ...