Alan Christianson, NMD

Dr. Mache Seibel’s book, The Estrogen Window, introduces a new era of understanding hormone replacement therapy as well as a new level of clarity for controversial topics of medicine. The forces that coax experts towards trends and habits and pull them away from hard...

Holly L. Thacker, MD FACP NCMP CCD

I strongly encourage all midlife women and their physicians to read Dr. Mache’s book, “The Estrogen Window,” which artfully explains and compilates the latest research on menopausal hormone therapy in an elegant and easy to understand fashion helping women to Be...

Julie Holland, MD

In The Estrogen Window, Dr. Mache Seibel tells us everything we need to know about one of the most frequently prescribed medications in America. The crucial message is one women have known for millennia: timing is everything.