When the level of sodium in the human blood is below 135 mmol/L, then such person is said to have hyponatremia. One of the major causes of this condition is having excess water relative to solute in the body, which may be as a result of excess of prolonged exercise and drinking large volumes of water. This results in some form of malfunctioning of the kidney in its regulation of the amount of sodium in the blood.
In medicine, hyponatremia refers to a medical condition where there's a low level of sodium in the blood.
One of the main causes for hyponatremia is having prolonged periods of exercise (and therefore sweating a lot) combined with drinking large volumes of water without electrolytes. Because of the sweating and the large volumes of water, the kidneys start malfunctioning and they can't regulate the amounts of sodium properly.
In this example, <u>a person works outside in a physically demanding job in August, sweats a lot and consumes large volumes of water throughout the day,</u> we can see that this person meets the criteria mentioned in the previous paragraph to develop signs of hyponatremia.
