"i&#039;m a big fan of iuds. i had two paragards after having my last child at age 29. when i started to have heavy bleeding i opted for the mirena to help control that and to avoid an ablation. it&#039;s been great for controlling bleeding and my periods are few and far between. i am going to be 50 next year and my estrogen levels are still pretty good - meaning i am still a fertile myrtle. so, for now, the mirena has been a great thing for me. there have been no mood swings, no heavy bleeding, no weight gain and no other noticeable side effects."