birth control
"I just had my second Mirena inserted after 5 years. Before starting with it, I was always battling low iron (once my ferritin level was 4). After using the Mirena, my period became super-light, and now my ferritin level is over 80. The second time around, the insert was a lot more painful. The doc said that it tends to be more painful as you get older (I'm 46). I really have not had any side effects that I've noticed with the Mirena. Not sure if I'll need it again, since I'll be 51 in five years."