hypogonadism, male
"I'm a 35 year old male and I had no idea that lack of testosterone could have such an effect on the body.  While my sex drive was on the low side, that was not the major problem.  I had been put on various antidepressants over many years.  However, my low testosterone level was the real culprit.  I would advise all men who have depression issues to have their testosterone levels checked."