What causes low sodium levels in the elderly?

Low sodium levels in the elderly can result from both non-pathological and pathological factors, such as poor diet or medication side effects. Treatment should be based on the underlying cause.

1. Non-Pathological Factors

a. Poor Diet

Elderly individuals may consume insufficient salt due to taste preferences or loss of appetite, leading to hyponatremia. This can be corrected by dietary adjustments, such as drinking saline solution or increasing salt content in food.

b. Medication Side Effects

Elderly patients with conditions like hypertension or cardiovascular disease often take long-term medications such as diuretics or antihypertensives, which may cause excessive loss of sodium and lead to hyponatremia. Patients should discontinue these medications promptly and seek medical guidance for recovery.

2. Pathological Factors

Declining kidney function in older adults may impair the kidneys' ability to properly excrete excess water and sodium, resulting in hyponatremia. In such cases, intravenous administration of normal saline or hypertonic saline may be required under a doctor's supervision.

In addition, reduced liver function may impair protein synthesis, contributing to hyponatremia. In summary, low sodium levels in the elderly may stem from various causes, and diagnosis and treatment must be tailored to the individual. If symptoms of hyponatremia occur, prompt medical attention should be sought to obtain professional care.