By the time Dan hit 57, he didn't recognize himself. He was always tired, fell asleep after dinner and was angry all the time.
"My libido was less and I was beginning to have a loss of erection while having sex, but I thought that was part of the normal aging process," said Dan, who did not want his real name to be used.
"I had just changed doctors and he asked me, 'Are you more grumpy and less interested in things like sex?'" Dan, now a 60-year-old California counselor, said.
null"Yeah, I am more