During the past few years, most media reports have contained no critical evaluation and have featured the views of proponents and their satisfied clients. Genuine alternatives are comparable methods that have met science-based criteria for safety and effectiveness. Experimental alternatives are unproven but have a plausible rationale and are undergoing responsible investigation.
Questionable alternatives are groundless and lack a scientifically plausible rationale.
Some methods fit into more than one category, depending on the claims made for them. There is only scientifically proven, evidence-based medicine supported by solid data or unproven medicine, for which scientific evidence is lacking. We recognize that there are vastly different types of practitioners and proponents of the various forms of alternative medicine and conventional medicine, and that there are vast differences in the skills, capabilities, and beliefs of individuals within them and the nature of their actual practices. Moreover, the economic and political forces in these fields are large and increasingly complex and have the capability for being highly contentious. Under the rules of science, people who make the claims bear the burden of proof.