Complementary and alternative medicine (CAM) is a euphemistic label for practices of which most are unsubstantiated and lack a scientifically plausible rationale

True

Explanation:

CAM are defined as practices, generally derived from traditional practices, used for health maintenance and enhancement as well as disease management. It includes the use of natural substances, physical manipulations, and self-care modalities. CAM are usually complementary to allopathic medicine, but it can also be an alternative therapy, unfortunately, these practices are unsubstantiated and don't have a scientific background.

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