Final answer:
Increased distal Na delivery, caused by aldosterone, can lead to hypokalemia due to redistribution of potassium in the body.
Step-by-step explanation:
Hypokalemia, an abnormally low potassium blood level, can be caused by increased distal sodium (Na) delivery. This occurs when there is an excessive reabsorption of Na in the distal tubules of the kidneys. One of the main causes of this increased Na delivery is the hormone aldosterone. Aldosterone promotes the reabsorption of Na and water, which leads to increased blood volume. As a result, more Na is delivered to the distal tubules, which can cause hypokalemia due to the redistribution of potassium in the body.