Naturopathy has its origins in the Nature Cure movement of Europe. It is practiced in many countries but subject to different standards of regulation and levels of acceptance.
In five Canadian provinces, fifteen US states and the District of Columbia, naturopathic doctors who are trained at an accredited school of naturopathic medicine in North America are entitled to use the designation ND or NMD. Elsewhere the designation is generally unprotected. Those from these particular accredited schools are trained to use diagnostic tests such as imaging and blood tests before deciding upon the full course of treatment, and to refer to other health professionals for standard medical care where it is required. However, the scope of practice for Naturopathic doctors varies widely amongst jurisdictions, and naturopaths in unregulated jurisdictions may use the ND designation or other titles regardless of level of education.
Naturopathy is viewed with skepticism by some critics, including scientists and medical practitioners, as it relies on unproven treatments. These treatments may include homeopathy, which is widely considered pseudoscience or quackery.