Hi I am having the same side effects that I have read from others! My Mirena was inserted in 6/08. Slowly but surely all the side effects have appeared. Mood swings, oily skin, acne, weight gain, and the worse of all, the hair loss. I have always had thick long hair! My thyroid has always been a problem and my family doctor said my constant thyroid fluctuations may be the reason for my hair loss! It is now 1yr and 4mos. since I've had the Mirena inserted and I have lost over 50% of my hair! Balding diffusely, but majority on the crown of my head. It is to the point of severe depression I do not even want to go out anywhere, because of the embarrassment. I am scheduled to have the Mirena removed this coming Monday! I am worried that if this is the reason for my hair loss that it may not regrow! I've read that once the hair follicles die they do not rejuvenate. Has anyone gone through this same process, did your hair regrow? I'm am literally having anxiety attacks thinking about my outcome! Can't sleep, crying constantly, totally preoccupied with the thought! Driving my family nuts with constant lack of enthusiasm for life!