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Professional board accredited diploma training and online certification courses in pure Naturopathy, Herbal Medicine, Healing Diets, Quantum Botanicals and Iridology.

We also offer the Natural Physician diploma to those students who complete their studies in the full system of natural medicine that we teach.

School of Natural Medicine UK Student photo

School of Natural Medicine UK is founded on a rich tradition of pure Naturopathy.

Integrating board accredited academic study with skills based training and experiential self healing, we offer small class sizes, a global community of students and graduates, and personal connection through individually mentored study.


School of Natural Medicine UK is founded on a rich tradition of pure naturopathy and preventative medicine. Integrating academic study with skills based training and experiential self healing, we offer small classes sizes, a global community of students and graduates, and personal connection through individually mentored study.

Bonny Casel ND MAMH FBRI
Naturopathy students at the Healing Diets Immersion

Course Options

Explore our course options by scrolling downwards, or through the drop down menu below:

For more information, to receive our prospectus, or to be added to our newsletter list, please contact us through this link, or through the form below.

We are delighted that you found our school and look forward to hearing from you!

Healing Diets students preparing raw bread
Healing Diets Nutritional Consultant Diploma

This unique course combines online training in the use of food as medicine, with fully integrated hands-on learning; an experiential journey into the effectiveness of healing diets within the life of each student in preparation for professional practice. Cleansing, health building and transition diets are taught in the context of life phases and individual needs.

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Herbal Medicine Immersion in Norfolk with Julie Bruton Seal
Master Herbalist Diploma

Our Master Herbalist Diploma course offers a thorough study of Western Herbal Medicine, alongside in-depth study of Iridology and Healing Diets. This integrated approach ensures herbal recommendations are informed by knowledge of systemic strengths and weaknesses, and fully supported by cleansing and health building approaches to food as medicine.

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Honeysuckle plant emerging from soil
Quantum Botanicals Advanced Diploma

The Quantum Botanicals Advanced diploma course offers a loving and mind expanding exploration of the plant world, the nature of consciousness and quantum physics, opening your heart and mind in profound ways that will change the way you perceive healing, the relationship between mind, body and nature, and the patient-practioner relationship.

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Iridology student sharing her Iris Mind Map
Master Iridologist Diploma

Train with Bonny Casel ND, a leading Master Iridologist who has personally studied with Iridology pioneers Dr. John Christopher, Dr Bernard Jensen, Harry Wolf, Farida Sharan and Dorothy Hall. She has also studied with the creator of Rayid, Denny Johnson. The Master Iridologist diploma course includes in-depth study of Healing Diets, cleansing and health building.

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Students attending a lecture during the Healing Diets Immersion
Naturopathy Diploma

The Naturopathy diploma course integrates the study of Naturopathy, Healing Diets, Herbal Medicine and Iridology, providing a systemic approach to holistic natural medicine that recognizes that the cause and cure of disease lies within the whole person; physical, mental, emotional and spiritual. The course combines five in-person immersion trainings with mentored online study.

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Students attending a herbal medicine lecture at the home and pharmacy of Julie Bruton Seal
Natural Physician Diploma

The Natural Physician diploma course offers the integrated study of the complete system of natural medicine that we teach. All five online courses, encompassing a full range of healing modalities for mind-body healing, five immersion trainings, and clinical training are integrated with experiential learning in the Self Healing module.

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Online Certification Courses

Students Healing Diets Meal
Healing Diets Coach Certification

This comprehensive online course in 'food as medicine' takes you on an inspirational and experiential journey of the principles and practice of cleansing, health building and rejuvenation, food for different life phases, food for beauty and emotional/mental health, the methods and politics of the food industry, consultation skills, practice development and much more

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Student exploring Botany at the Herbal Medicine Immersion
Herbal Medicine Certification

The Herbal Medicine online course offers a comprehensive study of Western Herbal Medicine, focusing on systemic use of herbal formula and naturopathic herbal treatments. By treating the whole person, we support the body's own healing intelligence, in alignment with naturopathic principles that are the guiding light of natural medicine.

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Spring flowers in Norfolk
Quantum Botanicals Diploma

Journey through more than 100 years of scientific discovery that has proven that consciousness precedes matter, that thoughts and emotions initiate molecular/biological function and that the fundamental nature of matter is vibrational. Explore essential oils and flower essences alongside man's evolution with the field of plant consciousness.

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Iris chart being drawn by Iridology student
Iridology Certification

Iridology examines the iris structure, markings and colors to determine aging pathways, assess systemic strengths, weaknesses, levels of toxicity and function, providing a holistic analysis that aligns perfectly with the principles and practice of natural medicine. This in-depth course, created by Farida Sharan, author of the classic textbook, 'Iridology - A Complete Guide,' provides a thorough training for professional practice.

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Student working on gesture drawings at Kew Garden London
Naturopathy Certification

The Naturopathy online studies include diet and nutrition, herbal medicine, iridology, the full spectrum of naturopathic treatments and lifestyle, consultation skills, practice development and more. Your clients will not only achieve relief of symptoms, they will achieve true health as you educate them in preventative health care and reversal of dietary and lifestyle diseases.

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Study space of Healing Diets Graduate Lise Aanes
Natural Physician Certification

The comprehensive Natural Physician course offers the complete system of natural medicine that we teach. The four primary forms of plant medicine are taught in-depth: herbal medicine, essential oils, flower essences and diet. Students learn Iridology and a wide range of naturopathic therapies, providing the foundation for creating highly effective self healing programs.

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Immersion Trainings

Students preparing food at the Healing Diets Immersion
Healing Diets Immersion

The Healing Diets Immersion is a delicious, delightful, hands-on education in raw food preparation that provides the foundation for inspired, creative use of therapeutic nutrient dense foods. Students participate in establishing the rhythms of a living raw food kitchen, including sprouting and fermentation, a range of dehydrating projects, juicing, raw desserts, nut and seed milks, and much more.

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Students learning about herbs at the Herbal Medicine Immersion
Herbal Medicine Immersion

The Herbal Medicine Immersion instils an authentic relationship with plant medicine in daily practice, as students explore the multi-dimensional therapeutic qualities of plants through hands-on creation of formula, tinctures, salves, distillations, infused oils, flower essences and experiential treatment with poultices, packs and foot baths.

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Students learning about healing touch at the Essential Oils Immersion
Essential Oils & Healing Touch Immersion

The Essential Oils and Healing Touch Immersion focuses on experiential healing processes that combine essential oils with techniques to balance sympathetic and parasympathetic nervous system function and heart-brain coherence, allowing for deeper connection and receptivity to healing. In the second week, healing processes shift to the study of healing touch.

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Students taking notes at the Quantum Botanicals Immersion
Quantum Botanicals & Flower Essences Immersion

Through lectures and experiential classes, students explore the world of plants, both physically and vibrationally, with reference to studies of plant consciousness, plant senses, the 12 windows of perception and human-plant resonance. Study flower essences, felt sense, heart-brain coherence, brain hemisphere processing, and the language of feelings and emotions.

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Student sharing her iris mind map at the Iridology Immersion
Naturopathy & Iridology Immersion

The Naturopathy & Iridology Immersion is open to all students enrolled in a certificate or diploma course, as the content is profoundly enriching to all areas of natural medicine study and practice. Learn the fundamentals principles of naturopathy as they apply to self care, self healing and clinical practice, and explore the profound visual language of the iris.

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Student enjoying beautiful flowers at Kew Gardens 2018
Self Healing Module

The Self Healing module is a core part of diploma training. Here each student has the opportunity to personally experience the complete system of natural medicine that we teach. The focus of Self Healing is direct experience of dietary changes, herbs, essential oils and flower essences, supported by lifestyle and natural therapies.

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Our Mission

  • To teach an authentic system of natural medicine, mindful of the core principles of naturopathy, and integrated with current research.

  • To teach students how to establish cooperative, co-creative relationships with patients that inspire and support meaningful life change.

  • To inspire students to go beyond memorizing information, to truly living what they are learning, so that natural medicine becomes a life-long passion that supports personal health and professional success.

  • To provide an educational environment where self healing goes hand-in-hand with academic study, so that graduates can enrich their practice through personal experience.

Our History

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School founder, Bonny Casel ND, began her studies with natural health pioneers Dr. Bernard Jensen, Dr. John Christopher and Dr. Farida Sharan in the 1970's. She has been teaching Naturopathy, Herbal Medicine and Naturopathic Nutrition since 1988, and founded School of Natural Medicine UK in 2007. To find out more about our history, follow this link

About Us
Training with Dr Bernard Jensen in 1981
School History
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Bonny Casel ND
School Tutors
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Graduate teaching a Healing Diets class
Testimonials
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Quantum Botanicals students at Kew
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© Bonny Casel 2007