Don't take our word for it, here's a couple links on DHEA/cortisol.
Study showing DHEA can lower 24hr cortisol levels.
Another one, showing DHEA can reduce evening cortisol levels.
I'm not sure what your stress levels or cortisol numbers are, but you may want to checkout this page as well. You have any cortisol or thyroid numbers?
"4. High levels of cortisol, low levels of DHEA. The body cannot make enough DHEA to balance cortisol. This is the first sign of adrenal exhaustion. This is the first abnormal response to chronic stress. The patient needs a long break from whatever that chronic stress may be - the commonest chronic stress is Hypoglycaemia - the full story, but also consider insomnia, mental, physical or emotional overload or whatever. Pregnenolone can be supplemented to make the patient feel better, but it must be part of a package of recovery, without which worsening can be expected."
