Are steroids safe, if used properly?

What type?: Glucocorticoids such as prednisone are basically safe if used exactly as prescribed by a competent physician. A short course, for example, is great for poison ivy. Anabolic steroids are widely used, and the greatest danger is that the user will do something impulsively that they'll regret terribly for the rest of their life. Guys I've known who've tried them have all advised against it after.