Gastrointestinal Masterclass TWO


9 lessons online
90 minutes per lesson
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9 Module Online Webinar Series

This second Gastrointestinal Masterclass is the follow on from the extremely popular Gastrointestinal Masterclass One. We now have new topics, new presenters and a bonus session.

Jason Hawrelak PhD is joined by Dr Steven Sandberg-Lewis ND, Dr Cass Nelson-Dooley MS and Dawn Whitten ND See below for the presenters full bios.


We all know the gut is seat of many diseases and in this Masterclass we cover other very common gastrointestinal presentations. In the first lesson we learn from Dr Jason how to restore gut function and flora after antibiotics, radiation and chemotherapy, and travellers diarrhoea. Jason has also ordered stool analyses of the same stool sample from eight laboratories and in Lesson 3 he will contrast the results and show you how to interpret these. This will be an eye opener!

Dr Steven Sandberg-Lewis runs the digestive diseases clinic at the National College of Natural Medicine in Portland, Oregon and is presenting the latest on inflammatory bowel disease and how to effective manage hiatal hernia. We look forward to listening to Dr Steven’s expertise.

Cass Nelson-Dooley is presenting a frontier topic of the gastrointestinal flora; the oral microbiome. She has a fascinating and highly clinically relevant discussion explaining the wide range of effects of the the bacteria in our mouth including obesity, cardiovascular disease, gum disease, tooth decay, bad breath and others. The oral microbiome is likely to be a strong determinant of gut flora species. This lesson will change the way you think about our commensal flora.

Dawn Whitten has considerable expertise in infant and childhood disorders. She recently contributed to the Paediatric Masterclass and is presenting a practical clinical discussion on infant gut conditions specifically colic and GORD.

This will be a fascinating and very clinically useful Masterclass. Don’t forget, it’s is excellent or it’s free. We hope you can join us for the Natural Gastrointestinal Masterclass Two.

Note: Receive a bonus ninth webinar on Infantile GORD and Colic with the purchase of this event.


Dr Jason Hawrelak ND, BNat(Hons), PhD, MNHAA, MASN, FACN.

Dr Steven Sandberg-Lewis ND, DHANP.

Dr Cass Nelson-Dooley MS.

Dawn Whitten ND, BNat(Hons), IBCLC, FNHAA

See their full bios below.

World Class presenters | Unbiased information | Clinical focus | Comprehensive discussion with deep drilling | Easy access to all notes, handouts, videos | Money-back guarantee | Best and latest information | No travel costs | No carbon emissions | No time away from your clinic or your family


  1. Be able to restore healthy gut function in your patients, even after antibiotic use and travellers diarrhoea
  2. Accurately analyses faecal analyses
  3. Identify the principle factors causing many gut disorders
  4. Review the very latest research and emerging theories of gastrointestinal disorders
  5. Receive the clinical care strategies used by the top clinicians
  6. Achieve reliable clinical outcomes in gut related conditions


  • Clear explanations of how to achieve outstanding clinical results with gastrointestinal conditions
  • Engaging and highly clinically relevant presentations by the experts in gut health
  • Thorough investigation and explanation of the recommended tests, examinations and test result analysis
  • A PDF of all presentation slides
  • Links to all referenced research papers and useful clinical handouts
  • Access to the videos recordings of all presentations within 24 hr of the live event
  • Your exclusive invitation to the Health Masters Live Alumni Group


Each session is 90 minutes: 75 minutes presentation + 15 minutes Q&A

WEBINAR ONE – Prevention and Treatment of Traveller’s Diarrhoea and Gastrointestinal Microbiota Restoration after Common Medications

Presenter: Dr Jason Hawrelak

  • Travellers diarrhoea
    • Prevalence and potential consequences
    • Prevention
    • Treatment
  • Restore microbiota after ABs
    • Quick overview of GIT microbiota and its importance
    • Impact of ABs on microbiota
    • Potential consequences
    • Restoration protocol
  • Restore microbiota after NSAIDs
    • Impact of NSAIDs on microbiota
    • Potential consequences
    • Restoration protocol
  • Restore microbiota after PPIs
    • Impact of PPIs on microbiota
    • Potential consequences
    • Restoration protocol

WEBINAR TWO – Hiatal Hernia

Presenter: Dr Steven Sandberg-Lewis

  • Effective non-immunosuppressive treatments
  • Diet therapy that often can induce remission
  • Herbal and low dose prescription therapy to prevent IBD flares
  • Common nutritional side effects of commonly prescribed IBD medications

WEBINAR THREE – Stool and Faecal Microbial Analysis

Presenter: Jason Hawrelak

  • Key Genera and their role/position in the GIT microbiota
    • Beneficial
    • Potentially pathogenic
  • Comparison of available stool/fecal analyses
    • Culture versus molecular techniques
    • Pros and cons of different approaches
  • Key markers in the analysis and their interpretation

WEBINAR FOUR – The Oral Microbiome

Presenter: Dr Cass Nelson-Dooley

  • Recognize the oral microbiome as a critical contributor to the health of the entire GI tract.
  • Examine the connection between oral disease and systemic disease, especially cardiovascular disease and inflammatory bowel disease.
  • Understand how H.pylori and other chronic, gastrointestinal bacterial infections can originate in the mouth.
  • Discuss novel treatment strategies to address oral dysbiosis and thereby decrease inflammation in the GI tract and entire body.

WEBINAR FIVE – Lactose Intolerance and Fructose Intolerance

Presenter: Dr Jason Hawrelak

  • Lactose intolerance
    • Prevalence, pathophys, potential consequences
    • Diagnosis
    • Treatment/management
  • Fructose intolerance
    • Prevalence, pathophys, potential consequences
    • Diagnosis
    • Treatment/management

WEBINAR SIX – Inflammatory Bowel Disease

Presenter: Dr Steven Sandberg-Lewis

  • Effective non-immunosuppressive treatments
  •  Diet therapy that can often iduce remission
  •  Herbal and low dose prescription therapy to prevent IBD flares
  •  Common nutritional side effects of commonly prescribed IBD medications

WEBINAR SEVEN – Small Intestinal Bacterial Overgrowth 1

Presenter: Dr Jason Hawrelak

  • The rise of SIBO
    • What is it?
    • The types of SIBO
    • Controversies in diagnosis
    • Treatment & controversies in treatment

WEBINAR EIGHT – Small Intestinal Bacterial Overgrowth 2

Presenter: Dr Jason Hawrelak

  • Treatment & controversies in treatment continued
  • Case discussion

WEBINAR NINE – Infantile GORD and Colic

Presenter: Dawn Whitten ND

  • Infantile Colic – a non-specific diagnosis of little value
  • Crying and fussing in infants – why? What’s normal? When to worry.
  • Reflux
    • GOR versus GORD in the context of infant physiology
    • Problems and controversies with proton-pump inhibitors in infants
    • Allergic oesophagitis and other allergic or intolerant gastrointestinal conditions as a cause of digestive distress
    • Considerations and treatment approaches
  • Lactose intolerance
    • The role of lactose in infant health
    • Primary lactose intolerance – an extremely rare condition in infants
    • Secondary lactose intolerance – causes and management
    • Lactose overload – a syndrome seen in the thriving infant with copious stools and digestive distress
    • Perils associated with the use of lactase enzyme and lactose-free formula


dr-jason-hawrelak-ndDr Jason Hawrelak ND, BNat(Hons), PhD, MNHAA, MASN, FACN

Considered one of the leading experts in the treatment of gastrointestinal conditions with natural medicines, Jason’s passion for gastrointestinal health, the gastrointestinal microbiota (the inner ecosystem), and probiotics was ignited during the final year of his undergraduate naturopathic training. Subsequently, Jason did his Honours (First Class) and PhD degrees in the areas of the gastrointestinal microbiota, irritable bowel syndrome, and the clinical applications of pre- and probiotics. He has written extensively in textbooks and journals on these topics.

Dr Hawrelak is a naturopath, herbalist, and nutritionist with over 15 years of clinical experience. He regularly consults with patients from all over the globe who come to him for his expertise, extensive background knowledge, and experience in treating gastrointestinal conditions.

Jason has taught health professionals (naturopaths, nutritionists, dieticians, chiropractors, pharmacists, and medical doctors) at both the undergraduate and postgraduate level for the past 15 years. He currently coordinates and teaches the Evidence-based Complementary Medicine Program in the School of Medicine at the University of Tasmania (Hobart, Australia) and is the Gastrointestinal Imbalances lecturer in the Master of Science in Human Nutrition and Functional Medicine program at the University of Western States (Portland, Oregon). In July 2015, Jason was awarded a Fellowship from the American College of Nutrition for his significant contributions to the teaching and practice of nutrition in Australia and North America.

Dr-Steven-Sandberg-LewisDr Steven Sandberg-Lewis ND. DHANP.

Dr. Steven Sandberg-Lewis has been a practicing naturopathic physician for 35 years, previously on Orcas Island in Washington state and now exclusively at the National College of Natural Medicine Clinic in Portland Oregon.

He is considered one of the leading experts in the field of Functional Gastroenterology and teaches courses in GI physiology, GI pathology, gastroenterology and Functional Analysis to students at the National College of Natural Medicine and supervises clinical rotations at the NCNM clinic. Dr. Sandberg-Lewis is also an investigator at NCNM’s Helfgott research Institute.

Dr. Sandberg-Lewis specialises in gastrointestinal condtitions and receives referrals of patients with digestive diseases who desire naturopathic treatment options. Often these are conditions that have defied diagnosis by other physicians.

In addition to supervising clinical rotations at the NCNM Clinic, as a full-time faculty member, Dr. Sandberg-Lewis teaches several academic courses such as pathology, gastroenterology and psychophysiology at NCNM. He is also an investigator at the National College of Natural Medicine’s Helfgott Research Institute.

Dr-Cass-Nelson-DooleyDr Cass Nelson-Dooley MS.

Cass Nelson-Dooley is a medical writer and served as a Medical Education Specialist for almost eight years at Metametrix Clinical Laboratory and then Genova Diagnostics.
Cass co-authored, “Nutrient and Toxic Elements” in Laboratory Evaluations for Integrative and Functional Medicine and authored case studies in Case Studies in Integrative and Functional Medicine.

At the University of Georgia, she completed a Bachelor of Science in Ethnobotany and a Master of Science in Ethnopharmacology. She has presented to both national and international audiences on the topics of nutrition, laboratory tests, disease prevention, drug discovery research, and obesity and osteoporosis. Cass received the Fulbright Scholar award to study medicinal plants in Bocas del Toro, Panama.

dawn-whittenDawn Whitten NND, BNat(Hons), IBCLC, FNHAA

Dawn is a naturopath, nutritionist, herbalist and lactation consultant. After completing her Bachelor degree, Dawn went on to obtain First Class Honours for the clinical research she undertook in the area of Herb-Drug interactions. She has published in this area and looked more deeply into Herb-Drug interactions pertinent to cardiovascular medicine.

Dawn regularly publishes papers in the peer-reviewed literature and presents both nationally and internationally. Recent topics she has presented include: Breastfeeding; Pregnancy Nutrition; Treating Allergies in Children; and Introducing Solids for the Prevention of Allergies.

Dawn has also worked as a research assistant for Southern Cross University in the field of herb safety in pregnancy and breastfeeding. She was recently awarded a prestigious Fellowship by the National Herbalist Association of Australia for her contribution to the field of herbal medicine in Australia.


Latorre M – Microbiome as mediator: Do systemic infections start in the gut?

Yanyong D – Lactose Intolerance in Adults: Biological Mechanism and Dietary Management

Wang Y – The role of microbiome in central nervous system disorders

Konturek – Stress and the gut: pathophysiology, clinical consequences, diagnostic approach and treatment options

Zhengjiang X – Dietary effects on human gut microbiome diversity

World Class presenters | Unbiased information | Clinical focus | Comprehensive discussion with deep drilling | Easy access to all notes, handouts, videos | Best and latest information | No travel costs | No carbon emissions | No time away from your clinic or your family


Research on natural medicine is increasing fast. You will get the very latest research and practical direction in assisting the large number of patients seeking natural health care. With every course you receive the links to all papers referenced.


As a graduate of any of our Masterclass events you will receive an exclusive invitation to our locked and highly valuable Health Masters Live Alumni Group where we share ideas, case studies, ask questions of fellow graduates and all keep in touch.


We present high-level, unbiased, post-graduate education. We have no financial connection to any suppliers of supplements or other goods to natural healthcare providers. All presentations are highest level, unbiased, and non-commercial.


You will receive a personalized certificate for each course you do with us. We are a global company and have our events preapproved by many associations around the world. Please check with your professional Board with regard to how many points/credits per hour of study are given with Health Masters Live classes.


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