Hyponatremia is associated with decreased blood levels of this mineral.

Answer: Sodium

Explanation:

Hyponatremia can be defined as a medical condition in which there is a low sodium concentration in the blood.

It takes place when the level of the sodium inside the body goes below 135 mmol/L.

Thee symptoms can be decreased ability to think, poor balance, nausea, headache.

In case of severe hyponatremia seizure, coma and confusions can take place.

This is usually caused during the time of dehydration when there is a loss of fluid from the body. Example vomiting, sweating, diuretics et cetera.