Practitioner Course

Gastrointestinal Masterclass THREE

The Gastrointestinal Masterclass 3 covers the foundation aspects of gut flora and function. 

Online Course
9 lessons


12 Months OR Subscriber Pass


90 min/lesson
13.5 Hours total


Dr Thomas Guilliams
Dr Liz Lipski
Dr Dickson Thom
Kiran Krishnan
Dr Robert Silverman
Corene Humphreys
Dr Matt Marturano

About this course

The Gastrointestinal Masterclass 3 covers the foundation aspects of gut flora and function. We address eubiosis and dysbiosis, digestion and maldigestion, prebiotic fibres and foods, and probiotics.

Probiotics is a constantly advancing field with new understandings and therapeutic options arising frequently. An example is the recognition of the value of transient bacterial populations. These have beneficial effects whilst present in the gut but they don’t stay for long, although their effects may. A newly discovered feature of the transient bacterial populations is that they induce bacterial diversity in the gut. With the falling diversity we find in human populations the effect of transient bacteria may be substantial.

As well as updating the fundamentals of gastro function we cover several pathologies. The Gastrointestinal Masterclass 3 has a general focus on upper GI. We look at gastritis and oesophagitis, and also update the diagnosis and treatment options for Blastocystis, Giardia, and gastroenteritis.
This Masterclass is a must do update on the foundation of natural medicine – the gut. Keeping up with the advances in this area ensures that you are addressing one of the most common causes of most acute and chronic diseases.

Each of your presenters has been chosen because of their specialty and experience in their topics. They have considerable expertise and will give you what you need to make better clinical decisions and thereby achieve better patient outcomes.

You might also be interested in the Gastrointestinal Masterclass One and the Gastrointestinal Masterclass Two.
What you receive:
  • Clear protocol explanations from some of the world's top practitioners
  • Clinical pearls for improved practice results
  • Access to your audio and video recordings via the App Store
  • A downloadable PDF of the presenter’s slides
  • Links to all referenced research papers and useful clinical handouts
  • Access to the community hub where you can get answers to your questions
  • A 30-day money back guarantee

From this course you will

  • Gain a deep understanding of gut function and the intestinal microbiota
  • Learn the latest advances in natural gastroenterology and the microbiome
  • Know how transient bacteria affect your patient’s bacterial populations
  • Learn the appropriate clinical use of probiotics, prebiotics, synbiotics and colonic foods and learn to fine-tune your probiotic prescribing to ensure superior results
  • Receive strategies to restore a healthy GIT ecosystem and care for the increasing list of conditions associated with intestinal dysbiosis
  • Learn treatment strategies for gastro-oesophageal reflux, gastritis, Blastocystis and Giardia infection

What's in this course

Your Presenters

Dr Thomas Guilliams

Dr Thomas Guilliams PhD earned his doctorate in molecular immunology from the Medical College of Wisconsin in Milwaukee. For the past two decades, he has spent his time investigating the mechanisms and actions of lifestyle and nutrient-based therapies and is an expert in the therapeutic uses of dietary supplements.

Tom serves as an adjunct assistant professor at the University of Wisconsin – School of Pharmacy and is the VP of Science for Ortho Molecular Products. Since 2014 he has been writing a series of teaching manuals (Road maps) that outline and evaluate the evidence for the principles and protocols that are fundamental to the functional and integrative medical community; including a comprehensive textbook called Functional Strategies for the Management of Gastrointestinal Disorders (2016).

He is the founder and director of the Point Institute, an independent research and publishing organization that facilitates the distribution of his many publications. A frequent guest-speaker, Dr. Guilliams provides training to a variety of health care disciplines in the use of lifestyle and natural medicines. He lives in the woods outside of Stevens Point, Wisconsin with his wife and children.

Dr Liz Lipski

Dr Liz Lipski is a Professor and the Director of the Academic Development for the Nutrition programs in Clinical Nutrition at Maryland University of Integrative Health. She holds a PhD in Clinical Nutrition two board certifications in clinical nutrition and one in functional medicine. She is on faculty for the Institute for Functional Medicine, the Metabolic Medicine Institute fellowship program. She currently sits on advisory boards for Ubiome, the Certified International Health Coaches, and the Autism Hope Alliance.

Dr Lipski has been published in peer reviewed journals including Nutrition in Clinical Practice and Integrative Medicine: A Clinician’s Journal, and is the author of several books: Digestive Wellness, The Digestion Connection, Digestive Wellness for Children, and Leaky Gut Syndrome. She co-authored the Gastrointestinal chapter for the American Board of Integrative Health and Medicine study guide and is a contributing author for Integrative Gastroenterology.

Dr Dickson Thom

Dr Dickson Thom DDS, ND has 40+ years of experience as a clinician and over 20 years as a medical professor. He lectures extensively throughout North America and is the author of two books, “Coping with Food Intolerances” and “Unda Numbers: An Energetic Journey to Homeostasis and Wellness. He has been teaching doctors, students and the lay public in proven medical principles and business skills for over 35 years.

His first postdoctoral degree was obtained from the University of Toronto, Faculty of Dentistry in 1974. He received his first Doctor of Naturopathic Medicine degree from the Ontario College of Naturopathic Medicine in Canada in 1986. In 1989, he completed a second degree from the National College of Naturopathic Medicine in Portland, Oregon.

Dickson was the past Dean of Naturopathic Medicine at NCNM and was a full-time professor teaching clinical and physical diagnosis, gastroenterology, x-ray practicum, neurology, and business entrepreneurship for 23 years. He has lectured extensively throughout North America and has written and collaborated on many articles dealing with energy medicines and nutrition.

In 2009, Dr Thom received a very prestigious honor and was awarded “The Vis Award” from the American Association of Naturopathic Physicians for his commitment to the Healing Power of Nature as demonstrated through my work, life, and community service. In addition to being a full time professor, he had a private practice in Portland, Oregon for 23 years with a primary focus on the management of chronic disease, including autoimmune disease, neurological conditions, gastrointestinal problems, and endocrine disorders.

Kiran Krishnan

Kiran Krishnan is a Microbiologist who has been involved in the dietary supplement and nutrition market for the past 15 years. He comes from a strict research background having spent several years with hands-on R&D in the fields of molecular medicine and microbiology at the University of Iowa. 

He left University research to take a position as the U.S. Business Development and Sales Manager for Amano Enzyme, USA. Amano is one of the world’s largest suppliers of therapeutic enzymes used in the dietary supplement and pharmaceutical industries in North America. At Amano, he conceptualized and successfully launched several dietary supplement ingredients in the North and South American markets.

In addition to his experience at Amano, Kiran has designed and conducted over 10 clinical trials as a partner in a Contract Research Organization called Live Smart, Inc. Over the past 10 years Kiran has focused his knowledge and experience to developing unique and effective nutritional products for other well-known brands in the dietary supplement market. Kiran has had several market successes in the dietary supplement and nutrition markets. He brings his extensive technical knowledge, his clinical research experience and his passion for creating effective, natural products to the PeakBiotics® team. As a microbiologist, he has a deep understanding of microbial science and has spent the last 6 years studying the strains used in PeakBiotics®.

Dr Robert Silverman

Dr Robert Silverman is a chiropractic doctor, clinical nutritionist, international speaker and author of, “Inside-Out Health: A Revolutionary Approach to Your Body,” an Amazon No. 1 bestseller in 2016. The ACA Sports Council named Dr. Silverman “Sports Chiropractor of the Year” in 2015. His extensive list of educational accomplishments includes six different degrees in clinical nutrition. Dr. Silverman also maintains a busy private practice as founder of Westchester Integrative Health Center, which specializes in the treatment of joint pain using functional nutrition along with cutting-edge, science-based, nonsurgical approaches.

Dr. Silverman is on the advisory board for the Functional Medicine University, the advisory board for Metagenics and is a seasoned health and wellness expert on both the speaking circuits and within the media, as well as a frequent health expert contributor on national blogs such as Consumer Health Digest. He has appeared on FOX News Channel, FOX, NBC, CBS, CW affiliates as well as The Wall Street Journal and NewsMax, to name a few.

He was invited as a guest speaker on “Talks at Google” to discuss his current book. As a frequent published author in peer-reviewed journals and other mainstream publications, including Thrive Global, Integrative Practitioner, MindBodyGreen, Health Radar, Muscle and Fitness, The Original Internist and Holistic Primary Care journals, Dr. Silverman is a thought leader in his field and practice.

Corene Humphreys

Corene Humphreys ND, BHSc is a registered naturopath from New Zealand with over 25 years’ experience in the medical industry. She received her qualifications from Auckland University of Technology (Microbiology), the South Pacific College of Natural Therapeutics Inc. (ND, Dip Med Herb, Dip Hom) and Charles Sturt University (Bachelor of Health Sciences).

Corene operated a multidisciplinary practice for 7 years specialising in Functional and Ayurvedic Medicine. She also served as a clinical consultant for a number of specialty diagnostic companies which lead her to immigrate to the US. During her role with Genova Diagnostics, Corene was instrumental in developing the Comprehensive Gastrointestinal Profile, along with other specialty GI and Metabolic Profiles. She also served as an educational resource for physicians, consulting to thousands of practitioners in North America as well as international clients.

Upon returning to New Zealand in 2005, Corene founded a research company, which provides consultancy support to conventional and compounding pharmaceutical companies as well as natural health businesses in New Zealand and abroad. In addition, her company (Nutritional Medicine Ltd) formulates evidence-based natural health products. She also lectures in Asia for antiaging clinics, specializing in bioidentical hormone therapy and tailored holistic health regimes.

For five years Corene was part of Wellpark College faculty where she wrote course content and presented Medical Microbiology and Functional Medicine. In 2013 and 2015, Corene authored chapters in the Textbook of Natural Medicine and Integrative Medicine on Intestinal Permeability and Insulin Resistance and the Metabolic Syndrome respectively. She regularly travels internationally attending medical and probiotic conferences to keep abreast of the latest research in the ever-advancing fields of Holistic and Functional Medicine.

Dr Matt Marturano

Dr Matt Marturano ND, is a naturopathic physician with a keen interest in the human gut microbiome and digestive system. Dr. Marturano’s educational background includes an undergraduate degree in biology and philosophy from the University of Michigan, and a doctorate of naturopathic medicine from the Southwest College of Naturopathic Medicine.

He currently conducts lectures, webinars, and trainings on an open-source method for the natural treatment of functional digestive disorders. Matt is also vice-president of Orchid Holistic Search, a boutique executive search company focused in the natural products industry.