Find out how much water you really need for exercise, plus practical tips to avoid dehydration during your workouts and ...

New research explains how low levels of the electrolyte sodium in the blood can disrupt the timing of the heartbeat in ...

New research explains how low levels of the electrolyte sodium in the blood can disrupt the timing of the heartbeat in patients taking widely used rhythm-control medications such as flecainide, which ...

Researchers are uncovering a link between rising temperatures and hyponatremia, a condition caused by a dangerous decline in sodium in the body.