Debi ~
I'm not a doctor but to the best of my (admittedly limited) knowledge, prolonged use of steroids very often
will trigger weight gain as well as other undesirable side-effects. However,
this is not necessarily true for every patient. I believe a lot has to do with the
strength of the steroid dosage and the
length of time the steroids are taken.
I had lost 30+ (unwanted) pounds prior to my surgery due to a loss of the sense of taste (attributable to my growing AN). I was given steroids (to reduce swelling) during my post-op hospital stay (5 days), then a 5-day tapering-off dosage when I was released. I did not gain any weight. 3 years later, my weight remains the same and I'm trying to keep it that way by eating smaller portions, avoiding 'junk food' and staying active. That proves nothing, of course, because we'll each have our own unique reactions to steroid usage. Your doctor can probably offer more and better information on this issue but I doubt there is a concrete answer to your question. As the auto ads used to say:
"your mileage may vary". 
Jim
