Danielle Ryan Dawson, RH (AHG) is a key player in the worldwide mushroom movement. As a Registered Herbalist (RH) of the American Herbalists Guild (AHG), Certified Holistic Nutritionist, Best-Selling Author, Instructor of Mycology, and Head of Innovation at Four Sigmatic, she brings her passion and expertise in herbal medicine, clinical practice, teaching, formulation, and her deep love for fungi to everything she does.