The Androgen Advantage

Mark Holthouse, MD, FMCP-M, is a clinician, educator, and researcher with 36 years of experience practicing Family and Integrative Medicine. He is board-certified in Family Medicine, holds prior certification with the American Board of Integrative Medicine, and was a member of the first IFM cohort achieving Certified Functional Medicine Practitioner.

Currently, Dr. Holthouse serves as the Chief Medical Officer at the Functional Medicine Institute, where he teaches and practices full-time. His extensive academic background includes serving as an Assistant Professor at Loma Linda University School of Medicine since 2014 teaching preventive cardiology and developing the core Men’s Health module for the Institute for Functional Medicine from 2013 to 2025.

As a recently published research scientist and author, Dr. Holthouse is deeply passionate about men’s and women’s hormone optimization, cardiometabolic health, and peptides. He brings a warm, evidence-based, and holistic approach to the science of human longevity.

Carrie Jones, ND, FABNE, MPH, MSCP is an internationally recognized speaker, consultant, author and educator on women's health and hormones with over 20 years in the industry. Dubbed the “Queen of Hormones,” Dr. Jones is a Naturopathic Physician who completed a two-year residency focused on women's health and endocrinology. She earned her Master of Public Health (MPH), became one of the first to be board certified through the American Board of Naturopathic Endocrinology (FABNE), and is a Menopause Society Certified Practitioner (MSCP). She was the first Medical Director for Precision Analytical (the DUTCH Test), the first Head of Medical Education at Rupa Health (a Fullscript Company) and served on Under Armour’s Human Performance Council. She regularly consults and educates for several women’s health, supplement, and lab-focused companies. Dr. Jones co-hosted the highly popular Root Cause Medicine Podcast, which has over 10 million downloads and now hosts her own podcast, Hello Hormones.

Joanna Matras-Godziejewicz, ND, PhD, is the Clinical Content Manager at Ortho Molecular Products, specializing in endocrine and neurological health and wellness. She earned her PhD in Neuroscience from Rush University Medical College, with a focus on neurodegenerative disorders. Driven by a passion for the interconnectedness of the body's systems, she later pursued Naturopathic Medicine at the National University of Health Sciences. Licensed in Minnesota, Joanna focuses on holistic neurology and endocrinology in her private practice. With deep expertise in integrative approaches, Joanna has played a pivotal role in formulating and promoting nutraceuticals targeting hormone balance, neurotransmitter function, and glycemic control. She frequently educates clinicians through conferences and training sessions, helping them leverage natural compounds to support complex endocrine disorders.

Mark Newman, MS, is a recognized expert and international speaker in the field of hormone testing. Mark spent 25 years developing and directing 24-hour urine, organic acid, and salivary hormone testing labs. His unique experience led him to pursue a revolutionary way to test hormones.

Mark began his own lab, Precision Analytical Inc., to create the most comprehensive functional hormone test available, DUTCH®—Dried Urine Test for Comprehensive Hormones. Mark is committed to making it easier for patients and their healthcare providers to answer complex clinical questions through extensive education on validated hormone research. He and his team of experts are dedicated to their mission of profoundly changing one life—and then a million more—through industry-leading functional hormone testing and education.

Dr. Jaclyn Smeaton, N.D. is a licensed naturopathic physician who has dedicated her life to serving women from an integrative perspective. For over 15 years, she has been the nation’s leading expert on integrative approaches to infertility, reproductive, and genitourinary health. In her practice, Hello Fertility, she has helped hundreds of couples conceive when they thought there was no hope, and has taught thousands of doctors her successful methods. In 2025, she completed a Certification in Women’s Health and Menopause through Harvard Medical School.

In addition to reproductive medicine, Dr. Smeaton has a diverse career spanning clinical laboratory work, dietary supplements, health technology and innovation, and strategic leadership and commercial strategy in the integrative medicine industry. She currently serves as the Chief Medical Officer for Precision Analytical, creators of the DUTCH Test.

She has served as adjunct faculty for Bastyr University, as President for both the New Hampshire Association of Naturopathic Doctors and the American Association of Naturopathic Physicians, as an Ambassador for the Academy of Integrative Health and Medicine, and a board member of the Integrative Health Policy Consortium, the American Herbal Products Association, and several others.