Low sodium can be serious, so it is important to figure out why and your internal fluid volume. If your vasopressin levels are low, you can take desmopressin. Samsca and declomycin are other medications depending on your diagnosis. If it is just on the low end of normal, you can limit fluid intake.
Mine always runs a little low, likely due to the diuretic in my BP meds. Doctors are not concerned, so I don’t do anything to raise my sodium intake, I’m concerned it could adversely impact my blood pressure.
Low sodium is a warning flag - take it seriously. If it leads to hyponatremia, this can cause brain swelling that can be life-threatening.
I’ve been hospitalized once with hyponatremia - it was not fun.
I solved my (self-inflicted) issues with low sodium by reducing fluid intake, taking 1g sodium daily, adding salt to food, and drinking two cups of coconut water as part of my daily protocol. I strictly monitor how many cups/day of fluid I drink, adjusting for activity.
I’m not sure how cancer cells can “cause” low sodium. There might be an indirect effect - e.g. my MO and I have concluded abiraterone is not the right drug for me, since it can disturb potassium levels, which in turn affect the balance of sodium.
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