Magnesium, potassium, or sodium? Learn what each electrolyte does, signs of low levels, and when a supplement may help.

It’s a well-known fact that the human body is more than 60% fluid. In addition to water, your bodily fluids contain vitamins, minerals, and other nutrients that keep the body functioning well. Sodium ...

Electrolytes are key to hydration, mainly because they enhance fluid retention. “Having more electrolytes can trigger more efficient fluid uptake from the gut,” says Kim Barrett, a gastrointestinal ...

Optimal ranges are set at different levels for each electrolyte, and levels can be measured with a blood test. If you have an electrolyte imbalance, you either have too much or too little of one or ...

Have you ever finished a run and noticed a thin layer of salt built up on your arms or forehead? This is evidence of your body losing salt – or electrolytes – through sweat. Keeping on top of your ...

Rebecca Jaspan is a registered dietitian specializing in anorexia, binge eating disorder, and bulimia, as well as disordered eating and orthorexia. Electrolyte powders are made up of sodium, potassium ...

Medically reviewed by Erika Prouty, PharmD Electrolyte supplements have become a staple in gyms, on running trails, and in everyday water bottles. Marketed as essential for hydration and performance, ...