Practitioner Course

Light and Melatonin as Medicine Masterclass

Use light and melatonin as powerful medicines for your patients.

Online Course
9 lessons


12 Months OR Subscriber Pass


10 hours total


Doris Loh, Catherine Darley, Deanna Minich, Vanessa Ingraham, Greg Potter, Alessandro Ferretti

About this course

Natural light exposure is a surprisingly effective therapeutic tool. This course will teach you a range of techniques for a wide range of conditions. When used therapeutically, light has substantial benefits. You can boost serotonin, melatonin, synchronise the body's internal clock and sleep-wake cycles to improve mood, energy, and sleep. Many people’s circadian rhythm is disrupted by inappropriate light exposure and also by darkness deficiency, all of which is covered in detail.

Skin exposure to sunlight activates the production of nitric acid, various neurotransmitters, mitochondrial light sensors, vitamin D synthesis, melanin and also the pro-opiomelanocortin pathway which has roles in mood, immune function, appetite and the adrenal/stress response amongst many others.

This is a brilliant course with clear techniques and explanations for you to apply to most of your patients and in addition to whatever else you are currently recommending for them. You have a free, very effective and ever-present clinical tool at your disposal with surprising effects on our physiology.

This course includes 8 bonus classes from the Advances in Sleep and Circadian Medicine course with Catherine Darley, the Chronobiology course with Greg Potter and the Chronobiology to Optimise Health course with Alessandro Ferretti.
CE hours are for the first 9 lessons. 
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

  • Understand the many effects of healthy light exposure
  • Learn how to reset your patient's circadian rhythm 
  • Gain a deep understanding of the powerful effects of melatonin and how to optimise your patient's melatonin production
  • Learn how to determine your patient's chronotype and know what to recommend for them specifically to cope with their daily work schedules and light exposures
  • Know how to recommend the 'when' of eating, sleeping and exercise
  • Be able to recognise light deficiency and also darkness deficiencies
  • Learn the latest on phase separation; what it is, how it works and what you can do to repair this foundational physiological process
  • Receive patient case studies and clear protocols on how to apply the many learnings in this course.

What's in this course

Your Presenters


Doris is an independent researcher/author focused on discovering health solutions that have withstood billions of years of evolutionary challenges. Her unique ability to make connections unseen by others has led to the publication of numerous ground-breaking, insightful, and inspirational works on ancient molecules such as melatonin, ascorbic acid, and deuterium. She is driven by a passion to share knowledge and educate others. Her simple, practical health solutions have benefitted many around the world, improving their health especially during the challenging environment of the SARS-CoV2 pandemic.

Trained as a classical concert pianist, Doris integrates artistic freedom with strict discipline to investigate novel concepts in health and disease. The depth and extent of her scientific knowledge can be appreciated in well-received, peer-reviewed articles published at prestigious journals such as Melatonin Research, Antioxidants, Molecules, and International Journal of Molecular Sciences.


Dr Catherine Darley ND is a graduate of Bastyr University. She combines her knowledge of sleep disorders with her training as a naturopathic physician to bridge these two fields. As a naturopath, her expertise lies in providing natural and effective treatments for sleep problems. She treats people of all ages and especially enjoys working with children and their families.
She founded The Institute of Naturopathic Sleep Medicine in Seattle which is dedicated to patient care, public education about sleep health, and research on natural treatments for sleep disorders.

Dr Darley regularly writes articles and speaks for professional audiences. She has served as adjunct faculty at Bastyr University and the National University of Natural Medicine. She previously served on the Board of the Washington Association of Naturopathic Physicians. In her personal time, Catherine advocates for later secondary school start times and enjoys time outside in nature.


Deanna Minich is a nutrition scientist, international lecturer, teacher, and author, with over twenty years of experience in academia and in the food and dietary supplement industries. Throughout the years, she has been active as a functional medicine clinician in clinical trials and in her own practice (Food & Spirit™), which has now become oriented towards groups, workshops, and retreats. She is the author of six consumer books on wellness topics, four book chapters, and over fifty scientific publications.

Her academic background is in nutrition science, including a Master of Science (M.S.) degree in Human Nutrition and Dietetics from the University of Illinois at Chicago (1995) and a Doctorate (Ph.D.) in Medical Sciences (nutrition focus) from the University of Groningen in the Netherlands (1999). For a decade, she was part of the research team led by the “father of Functional Medicine,” Dr. Jeffrey Bland, and has served on the Nutrition Advisory Board for The Institute of Functional Medicine, as well as on the Board of Directors for the American Nutrition Association. Since 2013, she has been part of the faculty for the Advanced Practice Module in Environmental Health offered by the Institute for Functional Medicine and has been teaching a graduate level course in metabolic detoxification at the University of Western States.

Over the decades, she has taught thousands of nutrition classes for health coaches, fitness trainers, and healthcare professionals, including for programs offered by the Functional Medicine Coaching Academy, the Integrative and Functional Nutrition Academy, and the Institute for Integrative Nutrition. In conjunction with her academic degrees and extensive teaching experience at the university level, she is both a Fellow (FACN) and a Certified Nutrition Specialist (CNS) through the American College of Nutrition. She is passionate about helping others to live well using therapeutic lifestyle changes that impact their physical, emotional, mental, and spiritual health.


Dr. Vanessa Ingraham is an integrative and functional medical practitioner originally from the Bahamas and now resides in Piha, New Zealand. Graduating as a licensed Naturopathic physician in 2012, she quickly distinguished herself, becoming one of the youngest graduates of The Academy Of Anti-aging Medicine's FAARFM fellowship program in 2017.

In 2013, Dr. Ingraham co-founded "Pure Health," an integrative clinic in Nassau, Bahamas, alongside her father, a pioneering "holistic" doctor in the region. The clinic specializes in IV nutrient therapy and mesenchymal stem cell treatments for complex chronic diseases. Later, she collaborated with Dr. Sy Peiere in a hospital-based practice, offering antiaging medical therapies and post-surgical care, before moving to New Zealand to formulate products for Nutrient Rescue NZ.

In Auckland, Dr. Ingraham's first New Zealand practice, Bloom Integrative Health, focused on supporting women dealing with hormonal conditions and those facing challenges related to cancer. Driven to make a broader impact, she shifted her focus to entrepreneurs and high performers experiencing the pressures of their demanding roles. This change followed her business partner's burnout experience and working with his colleagues in Silicon Valley, leading her to optimise the biology of individuals striving for success.

Currently based in Piha, Dr. V, as she is affectionately known, works remotely. Apart from her dedication to research, she is a committed yogi, witnessing every sunrise and immersing herself in nature. Her daily cold swims in the ocean or local waterfalls reflect her commitment to a lifestyle that supports her physiology and inspires other change-makers to create a balanced life that aligns with their goals. Her latest passion is continuously learning simple ways to improve her client's health through the cutting-edge field of Quantum Biology.


Greg helps individuals and organisations sustainably improve their health and performance through practical lifestyle changes. He does this through coaching, public speaking, consulting, podcasting, writing articles, and developing and popularising innovative new products. Greg’s PhD research focused on sleep, circadian rhythms, nutrition, and metabolism, and he is co-founder and Chief Science Officer of Resilient Nutrition.

Highlights of Greg's career include having his research featured in dozens of international news outlets, including the BBC, Reuters, and The Washington Post; working with the US Naval Special Warfare Command; appearing on TV as a sleep expert; having his writing featured in many newspapers and magazines, including The Metro, Stylist Magazine, and Newsweek; coaching a sprinter to four gold medals at the European Championships; and helping athletes break multiple World Records in ocean rowing.


Alessandro Ferretti graduated from the Institute of Optimum Nutrition in 2001 and formed Equilibria Health Ltd with partner Jules in 2004. Equilibria Health is now recognised as one of the UK’s leading providers of nutrition education. Over recent years, he has received two nominations for CAM Best Practice Award for clinical excellence.

Past work included practice from the Centre for Health and Human Performance at 76 Harley Street, London, and at Tudor Medical Centre, in Stratford Upon Avon. In recent years he has become fascinated by the potential of nutrigenomics, heart rate variability, metabolism and is actively researching the impact of food in performance and health. His most recent focus is studying the relationship between heart rate variability and blood glucose levels. He has recently developed a model to asses athletes health looking at data analysis and metabolic behaviour for long-term health.