dietarian

dietarian

(ˌdaɪəˈtɛərɪən)
n
rare a person who follows a particular diet
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Vegans' weak intention, negative attitude, and low willingness to eat insects in the future exhibit their different dietarian identity compared to that of omnivores and non-vegan vegetarians.
In the 1850s and 1860s the main hypotheses came from three anti-contagionistic schools of thought: hereditarian, sanitarian, and dietarian. (9) Norwegian and British researchers dominated the international scientific debate.