Original sentence: Naturopathic practitioners prefer not to use surgery, or most scientifically tested medications, preferring "natural" remedies such as herbs or foods.Practitioners are trained to use diagnostic tests such as imaging and blood tests before deciding upon the full course of treatment
Edited sentence: Naturopathic practitioners prefer not to use invasive surgery, or most synthetic drugs, preferring "natural" remedies, for instance relatively unprocessed or whole medications, such as herbs and foods.Practitioners from accredited schools are trained to use diagnostic tests such as imaging and blood tests before deciding upon the full course of treatment