basically, corticosteroids tend to make the body conserve salt so its better to reduce your intake and they tend to raise your blood sugar levels so its better to have as little sugar (including fruit sugar - so limit fruit and avoid fruit juices or dried fruit) in your diet as you can get away with. You may feel hungrier than normal on steroids, so if you try and think about having big plates of veggies together with lean protein and small portions of complex carbs (brown rice, barley etc) that's going to work out better for your weight and metabolism than giving in to the munchies and eating junk. depending on your will power you might want to 'clean house' and remove temptation from your cupboards. if you need some ideas, find a low GI diet but there are some more tips in the FAQ.
