This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Biochemistry
Hypermagnesemia may be observed in: 
Select and explain. 
A. Hyperparathyroidism, B. Diabetes mellitus, C. Kwashiorkor, D. Primary aldosteronism
B: Diabetes mellitus
Answer: B: Diabetes mellitus 
Explanation: Ans. B. Diabetes mellitusMagnesium is the fourth most abundant and important cation in humans. Hypermagnesemia is associated with Uncontrolled Diabetes mellitus, Hypothyroidism, Advanced renal failure and acute renal failure.