What may excessive magnesium intake lead to?

• A. Hypokalemia
• B. Hyperkalemia
• C. Hypermagnesemia
• D. Hyponatremia

Answer: (C)

Excessive magnesium intake can lead to hypermagnesemia, which is characterized by elevated levels of magnesium in the blood. Magnesium plays a vital role in various bodily functions, including muscle and nerve function, blood pressure regulation, and the synthesis of protein. However, when the intake of magnesium exceeds the body's ability to excrete it, particularly through the kidneys, this can result in an abnormal increase in serum magnesium levels.

Symptoms of hypermagnesemia may include muscle weakness, lethargy, respiratory distress, and cardiovascular effects such as bradycardia or hypotension. This condition is particularly important to monitor in patients who have renal impairment, as their ability to excrete magnesium is compromised.

Other electrolyte and acid-base disturbance options mentioned, such as hypokalemia, hyperkalemia, and hyponatremia, are associated with different imbalances and conditions that do not directly result from excessive magnesium intake, further underscoring that hypermagnesemia is the correct consequence of such an excess.