text: weight gain, mirena coil, prozac for anxiety disorder, ovarian cyst, impending 40th birthday.? i have all these things. do you think any of them are related? the mirena coil and ovarian cyst could be related.  one of the side effects of the mirena coil is endometriosis.  also, however, ovarian cysts can come and go, and possibly (even though 40 is a bit young) you could be in para-menopausal and sometimes ovarian cysts can develop yet dissolve on their own.  also, at 40 your metabolism will begin to slow down, so it's best to watch your calorie intake and keep up daily exercise to avoid weight gain.  at 40 your body begins not to want to metabolize all the sweets and fats that it handled when you were younger.  as for the prozac; how long have you been on it?  even though prozac, when you first start taking it, causes a decrease in appetite, after you have been on it for possibly a couple of years, a side effect can be just the opposite.  all in all, 40 is a great age.  enjoy this next decade.  it could be the best time of your life.