What it's normally used for
Testosterone and estrogen production declines as you get older. DHEA supplements can increase the amount of these hormones. Some of there potential health benefits are...
Slowing natural changes in the body that come with age.
Improving mood and memory.
Strengthening the immune system.
Building up the adrenal gland.
Providing more energy.
Building up bone and muscle strength.
Because DHEA levels go down with age, some researchers think that supplementing your body's lowering levels of DHEA might help fight aging. Some small studies have shown positive anti-aging effects from using DHEA.
What it does for Lucid Dreaming
DHEA can make your dreams way more controllable by increasing mental stimulation while dreaming. DHEA also helps you go back to sleep.
DHEA can sometimes cause lucid dreams by itself, though it definitely works way better when taken with Choline and Huperzine A.
My own results
I take DHEA after six hours of sleep and I remember more of the dream, where it seems like it's a longer dream. And it has what you might call a side effect, or an extra benefit, depending on how you look at it. It's easier to...get an erection! (As mentioned above, testosterone and estrogen production decline as you get older, and DHEA supplements can increase the levels of these hormones.)