Androgen deficiency in the aging male (ADAM), also known as
andropause, affects an estimated 1 in 200 men. Symptoms of testosterone
deficiency may include:
A man may be considered hypogonadal at any age if total testosterone
is less than 200 ng/dl, or bioavailable testosterone is less than
60 ng/dl. Basaria and Dobs of Johns Hopkins University recommend
that elderly men with symptoms of hypogonadism and a total testosterone
level < 300ng/dl should be started on hormone replacement.