For many women, having a consistent period is seen as a sign of good health. As women athletes, in particular, we rely on our menstrual cycles to gauge how well our bodies are responding to training and whether we are getting adequate nutrition. But hormonal IUDs can alter periods, making it challenging for those of us with these IUDs to monitor our health without a regular cycle.   We spoke with VIS Expert Chimsom Oleka, MD, to discuss what a hormonal IUD is, how it changes your pe...