Therapies are designed to work with the body and although they tend to be safe, safety needs to be proven. Safety may be established through historical or empirical evidence. Formal double blind studies to prove safety and effectiveness are the only recognized research method. Effectiveness needs to be proven because a therapy must work consistently for a particular condition. Safety levels must be established as therapies used are often toxic to the body and can do harm.
Studies also help to determine side-effects.
Practitioners acquire education or training in one or more natural health approaches. Practitioners must qualify as a medical doctor. The doctor is the authority on what is needed to restore health and may specialize in a particular area of the body or in a particular disease. To recognize the role we play in creating health or creating disease. To seek out practitioners and therapies that help.