Kathleen Barnes is a passionate natural health advocate, author, writer and publisher who has devoted nearly 40 years to educating the public about healthy living. She is an unusually versatile writer with experience as a journalist in print, broadcast and online media and as an author, editor and publisher with 20 books to her credit as well as coaching clients through health, career and relationship transformations for more than three decades.

This User's Guide describes the nature of thyroid disorders, natural thyroid-replacement hormones, and the important role of supplemental vitamins and minerals for thyroid function.