1.   And yet, Matsumoto reflected, testosterone deficiency can result in irritability.

2.   A testosterone deficiency more commonly results in a loss of libido and only sometimes in erectile dysfunction.

3.   For example, a man who suddenly has to shave only once or twice a week instead of every day may well be suffering testosterone deficiency.

4.   The medical term for testosterone deficiency is hypogonadalism.

5.   The story also quoted an anonymous Middle Eastern source saying bin Laden was treated for testosterone deficiency in Beirut.