Just for the record...
http://www.quackwatch.org/01QuackeryRelatedTopics/dhea.html
"Much of DHEA's reputation as a wonder hormone comes from experiments in which mice or rats were fed daily doses. Such studies have shown that DHEA can prevent or delay the onset of cancer, "hardening" of the arteries, lethal viral infections, lowered immunity, obesity, and diabetes. But what works in rodents doesn't necessarily work in humans. That may be especially true in this case, because rats and mice produce only about 1/10,000 the DHEA we do."
There is still no convincing evidence that DHEA actually works. Andro on the other hand is the last step before testosterone and actually does give you a small rise in testosterone level, although not enough of a rise to help much. Andro also can increase aggression, and that alone can give you better performance.
Alan