Bruce, I have been taking DHEA, I feel more energetic, I am able to stay up until 2 am, get up at 7 a.m., work all day, and do it again, I am 54, I do not have PD, but my father does, so I could inherit it, therefor I am trying to stay healthy. I also lost a few pounds since taking DHEA. Before I started taking it, I was falling asleep after dinner, and lucky to get my email before going to sleep for the night. I got it at Sam's Club for about $13.00 for 300 pills, I take two a day. Ken B