Rarely used term that identifies an individual who adheres a specific/particular diet pattern.

Not to be confused with a dieter which is the same thing as a slimmer ; someone who is currently dieting in attempts to slim down/get leaner.
Every gluten-free dietarian I’ve met is just doing it to follow trends.

Who’s more annoying & obnoxious; keto dietarians or vegan dietarians?
by IbreathAir February 17, 2021
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A person who is an adherent of any specific diet for any reason. A dieter
None of them are dietarians, she and her entire family are fat gluttons. They never restrict calories, never restrict any type of food, and don’t even practice constraint in the amount of food they eat.

American’s typically aren’t dietarians, they eat mindlessly without forethought.
by REARFRONT August 19, 2019
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