Changing door hingers,door dropped

Has anyone here had problems with there doors dropping,so much so you have to slam it shut?!
I am expecting to have to get the hinges changed but is there anything else i can do.

Thanks

its normally the lower hinge but you can re bend the hinge by jacking the door up slowly.
First check the striker on the B pillar isn't lose and then replace the lower hinge or carefully jack the door up until it shuts correctly.If YOU OVER JACK THE DOOR YOU WILL BEND THE HINGE TO MUCH