Cathy Shea, LMT, CT

I am respected International Expert in holistic education who has taught in Switzerland, Spain, Italy, Ireland, Denmark, New Zealand and Holland. I have been married to Michael J. Shea, Ph.D. since 1990. I love to swim in the ocean like a mermaid.  My greatest learning relates to my own journey when I found out that all of my health issues related directly to the heavy metal poisoning from dental amalgams in my mouth and root canals.

I have studied natural healing all of my life. When I met my husband, Michael J. Shea, Ph.D., I had just finished my first series of colon hydrotherapy treatments (colonics). As we sat at dinner on our first date, I was amazed to find out that he was both a massage and colon hydrotherapist. I began to travel and study with him in 1990 after we were married. It became clear to me that my career in real estate was coming to an end as I was entering into my practice of helping people heal themselves.  Michael encouraged me to begin teaching and after assisting him at numerous courses around the world, I felt ready.

In 1994 I invited 6 of my best friends to take my first colon hydrotherapy course and it was such fun! We laughed and learned together. I was delighted at this new direction in my life. It felt like I had answered a deep calling and now my work became my spiritual practice. I was one of the first instructors recognized by the International Association for Colon Therapy (I-ACT). I have personally taught people from 33 different countries. What an honor to be a part of such a global family of dedicated healers!

I proudly earned my state license in 1992. Florida is the only state that licenses colon hydrotherapy under the Board of Massage. I am Nationally Board Certified as well as an I-ACT Certified Instructor of Colon Hydrotherapy since 1994. I hold certification in craniosacral therapy, reflexology, manual lymphatic drainage. 



When Michael and I were invited to teach in Kiental, Switzerland in 1995, little did I know I would meet a major mentor.  My greatest learning has been with Thomas Rau, MD who is the developer of Swiss Biological Medicine.  He was the first medical doctor I met who acknowledged the value of my work with colonics.  I proudly earned my Certification from him after almost 10 years of study.  I continue to sit at his feet as the research unfolds in the field of gut microbiology.  Watch him in action HERE.


Shea Italy ConfItaly

I was a featured speaker at the Italian Society for Colon Hydrotherapy in Bologna, Italy in October 2014. I joined several medical doctors who include colon hydrotherapy in their private practices and in several hospitals.  They are documenting the success of colon hydrotherapy as preparation for colonoscopy and as a valuable adjunct to other gastroenterological procedures.


In 2016, I was a keynote speaker at the Inaugural Conference of the Spanish Colon Hydrotherapy Association.  I presented recent research on Stress and the Digestive System.  Michael was also on the dais and fascinated the audience with his research regarding the Embryological Development of the Digestive System.  It is an honor to be invited back to Madrid as a speaker September 29, 2018.



As colon hydrotherapy becomes valued in all health care settings, I have created a vision board that shows this connection.  I was invited to speak to the Inaugural Conference for the Australian Colon Hydrotherapy Association in 2015.  Bringing forth this vision as a way to inspire my colleagues around the world has opened a new conversation about the benefits of colon hydrotherapy.  There will be a live stream of my lecture at their next meeting October 21, 2018.  



Michael Shea
Michael J. Shea PhD

Michael J. Shea, Ph.D., Curriculum Developer, and he provides our student handbook with current scientific research findings. His gift is to read complex scientific words and distill them into a language anyone can understand.

Cathy and Michael have a combined 50+ years of experience in complementary and alternative therapies.  You deserve the best and that is what we provide.




Shanez Gunatilaka, Certified Instructor with International School for Colon Hydrotherapy

Shanez is a long time student of Alternative Health.  She trained with Cathy Shea in 1996 and again in 2002.  She is certified in Swiss Biological Medicine  Her interest in Alternative Medicine helped her clear up some of her own personal health issues.  She had taken steps to start training in the alternative health field while still working in the IT industry in the UK and decided to make a complete change once she became a permanent resident of the USA.  Shanez ran her own Natural Health Practice in the suburbs of Denver, Colorado USA for approximately 5 years before returning to Sri Lanka at the end of 2005 and since 2008 has had her own private practice in Colombo helping the people of her country acheive better health.