What is an electrolyte?

An electrolyte is a salt or an ion that is found in bodily fluids and carries a charge. Sodium, potassium and calcium are all examples of electrolytes.

Electrolytes are found in blood and in other bodily fluids, and the correct balance of electrolytes is essential for the healthy functioning of the human body. Loss of electrolytes through excessive sweating, vomiting or diarrhea can be fatal; electrolyte overdoses can also be fatal. The human body attempts to regulate electrolyte levels by excreting excess electrolytes in urine. Healthy individuals typically take in sufficient replacement salts and ions through their daily food intake.