A conventional Mainstream University, Southern Cross University at Lismore offers courses in Natural Therapies, for those who want to become Naturapaths.
https://www.scu.edu.au/study-at-scu/health/naturopathy/
In Europe especially Germany, etc., Medical Doctors do Post Graduate courses in Live Blood Analysis.
In California Seventh-day Adventists outlive the General Population by 8.9 extra years according to Statistics published in the Medical Journals. These Seventh-day Adventists get much less Cancer, etc.
Most, but not all Seventh-day Adventists are Vegetarian, and follow the NEWSTART principals.
https://www.bbc.com/news/magazine-30351406
https://pubmed.ncbi.nlm.nih.gov/11434797/
https://www.bmj.com/content/bmj/371/bmj.m4141.full.pdf
https://www.bluezones.com/exploratio...a-california/#
When I studied the Histology Subject of the Pathology Technician's Higher Certificate [in the early 1980s] The Professor from Westmead Hospital who taught us told the Class that their is a definite link between diet and cancer.
So not all Naturapathic ideas are rubbish.