Mark has been in private practice as a Naturopath & Counsellor for 40 years, prescribing tissue salts for thousands of clients. He has also been extensively involved in teaching about the tissue salts, lecturing and facilitating courses in Australia and Internationally. His background includes a Bachelor of Biological Sciences (Genetics and Zoology) and Bachelor of Applied Science - Naturopathy. Mark is a six-times published author in the natural therapies area and has conducted formal research at Victoria University in Natural Therapies. Mark has also completed his Master of Social Science (Counselling Psychotherapy) at Swinburne University Melbourne