* Signed bookplate * Take charge of your hormonal health at every stage of your life—from your first period to post menopause—with this groundbreaking, definitive guide from the force behind the viral Hot Flash Substack. From our mood to our metabolism, hormones are running the show behind nearly every bodily function. They tell our hearts how quickly to beat, our gut how to process the food we eat, our bones to release calcium, and our muscles to grow new fibers. Yet, most of us don’t fully understand how our bodies and its systems work—and more importantly, what to do when they don’t.