yes, they are not that great for long term, but since the ladies love them and will never ditch them (its okay cuz i luv them too, lol), here are a few simple rules to follow;
dont wear any really high heels daily, at least not at work. think of it this way, while your at work, for like 40 hrs a week, you should consider wearing medium heels at most, except for maybe once in a while, when you really want to wear that sexy high heel, then go for it. as long as its not that often then youll be less likely to have negative side effects. also save the really sexy high heels for nights out and other events, where your not likely to be stuck in them for 8 hours plus.
2. this is a big one. if your gonna wear them (and we know you are, lol), stay in shape and healthy (not fat). any extra weight will really take a toll on your feet, especially as you get older. if your feet hurt now after a day at work, imagine being 20 lbs heavier. all that weight and stress goes right to your feet.