Alternative therapists: Is there no law for them?

Alternative therapists: Where is the law for them?
This is a article from The Guardian Australia.

 It is so sad to watch men and women who refuse standard treatment and spend hundreds of thousands of dollars on therapies which have no basis. Sadly they refuse care and support from doctors, nurses and hospital caregivers.

If anything happens, which is off the norm… it becomes a Coroner’s case and the doctor/nurse and hospital are hauled before the courts. When these patients suffer and die under alternative therapies, is there anyone who asks the question about what happened?