A nutritionist who works in the industry explained how to notice these tricks. A nutritionist who works in the food industry broke down the marketing tricks companies use to make them seem more grounded in science than they are. Firsthand research is expensive, and companies often cobble together existing studies to back up their products. It isn't necessarily a red flag if a doctor is the face of a product, Prpa said, but that alone does not mean a product has health benefits. "You are not buying the medic as your private consultant, you are buying a product," she said.

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Persons: Emily Prpa, Prpa, that's, it's Organizations: King's College London, Business