What is a common cause of hyperkalemia in older adults?

Chronic kidney disease is a common cause of hyperkalemia, particularly in older adults, because the kidneys play a crucial role in regulating potassium levels in the body. As kidney function declines due to chronic conditions, the ability to excrete potassium diminishes, leading to its accumulation in the bloodstream. This is particularly significant in older adults, who may have a higher prevalence of kidney disease due to factors like hypertension or diabetes.

In contrast, while acute liver disease can lead to various electrolyte imbalances, it is less directly linked to hyperkalemia compared to chronic kidney disease. Excessive dietary intake of potassium is typically not a common cause in a controlled diet, particularly if kidney function is normal. Diuretic therapy can sometimes lead to changes in potassium levels, but certain types of diuretics actually promote potassium loss rather than retention, unless the specific setting involves potassium-sparing diuretics. Hence, chronic kidney disease stands out as the primary reason for the increased potassium levels seen in this population.