except for iron, deficiencies supposedly aren't that common as long as you stay on top of your supplements. Iron can be tricky because some people have a hard time absorbing oral iron, so they have to get it from infusions. But the majority can absorb oral iron just fine.
also, most deficiencies can be corrected by increasing your supplement intake. Iron, of course, is the one that can be tough to increase once it's low. I've been able to bring mine up by increasing my (oral) iron intake, but some people can't and have to have an infusion to bring it up.
you'll be getting regular labs drawn to see where you are, and they'll have you increase or decrease supplementation if your levels get out of range. I've had to increase my iron and decrease my calcium in my five years of being post-op. So just stay on top of your supplements and get your labs done when you're supposed to, and you should be fine.