Hi Bob at your age your OK
for DHEA its a hormone we have in our bodys, so all you will do is boost it up, with this take some Tribulus its a herb,now both of these run along the same lines, boost your testosterone, lift your libido and kick up your energy levels.
DHEA your start low 25 mgs a day and work it up to what you think you need, I'm on 75 mgs a day, but please read up about it first it can have the odd funny side effect with the odd person, anything goes wrong you just come off it.