Low salt levels in the blood CAN cause seizures. This is seen a lot in long distance, or endurance runners, and in the military.
Overconsumption of fluids during exercise may precipitate acute hyponatremia, a potentially life-threatening medical condition.
Prompt correction of sodium levels is important to reduce the risk of permanent neurological damage or death.
Recommendations for prevention include ingesting the correct amount of fluid for the activity (the most important method) and consuming adequate salt through diet or beverage.
Early hyponatremia symptoms are nonspecific and are similar to those seen in heat stroke or heat exhaustion.
Disorders that change levels of various metabolic substances in the body sometimes result in seizures.
- Altered levels of sodium, calcium, or magnesium (electrolyte imbalance)
- Kidney failure with increased urea in the blood (uremia) or changes that occur with kidney dialysis
- Low blood sugar (hypoglycemia) or elevated blood sugar (hyperglycemia)
- Lowered oxygen level in the brain (hypoxia)
- Severe liver disease (hepatic failure) and elevation of associated toxins
When drinking lots of water throughout the day, salts (especially sodium) are washed through the kidneys and voided. Increasing salt in the diet helps prevent any imbalance as a result of significant water consumption and low salt intake. For every two quarts of water consumed per day consider adding 1/2 teaspoon of salt.
Excessive sweating can lead to dilution of salt in body fluids which can cause a condition known as hyponatremia. Symptoms of hyponatremia are fatigue, weakness, cramping, nausea, vomiting, bloating, swelling and tightness of the hands and feet, dizziness, headache, confusion, fainting, seizures, coma, and even death. This is usually an acute problem encountered in athletic circumstances, requiring emergency medical care. Heat exhaustion and heat stroke must be distinquished as the treatment for each is different.
I hope this has helped to answer your questions.