Found another article. It says:
1) large amounts (so don't over do the amounts of roids)
2) What really is the culprit of the suppression is debatable, as different studies have found different things (so one says yes and another no). I'll ignore that then
And, so does OVERTRAINING. Stevesmi, fellow mod, bangs the drum of rest and recovery a LOT and rightly so. Look at symptoms of over training and see how similar they are.