Steriods as a class are already used quite a bit in medicine to treat things like allergies and endocrine conditions. Cortisone which you can buy in topical creams is a steriod. I highly doubt though rubbing a lot of anti-rash lotion will turn you into Mark McGwire.
There is a growing group of doctors who feel that small amounts of steroids and other growth hormones can extend and improve the quality of life.
This is complete bull****. Sorry about your friend but the scientific data doesn't back up what you have said here.