Natural medicine doesn't just involve "nutraceuticals," but extends to modalities like yoga and acupuncture that an increasing body of peer-reviewed research shows can be superior to drugs.
Hippocrates - the father of medicine - said, "Let your food be your medicine, and let your medicine be your food." Medicines are a subset of foods, according to Hippocrates. I like that. What are medicines today? What are foods?
Ok, so we have billions of pounds of synthetic chemicals consumed every year as patented drugs, with an army of degreed, licensed and doctored foot soldiers prescribing them recklessly under the once great banner of "medicine," in an ongoing war against the body's virtually infinite potential to generate symptoms, most of which are – ironically – a means to heal from acute or chronic exposure to synthetic chemicals.