Last year, I was fortunate enough to have a letter to the editor on the topic of orthorexia nervosa published in the journal Eating and Weight Disorders (also see here). In my letter I wanted to explain that vegans may answer the questionnaires - which are used to assess "restrictive eating behaviour" and in turn "orthorexia risk" - differently from non-vegans. And this might lead to wrong conclusions about vegans being at a "higher risk" - when really it doesn't seem like they (we) are.
There are a number of different "questionnaires" being used by psychology researchers to assess this "orthorexia risk". The one I addressed in my letter to the editor is called the "Düsseldorf Orthorexia Scale" (from Germany).
Now, a really amazing review article (titled "Disordered eating and the meat-avoidance spectrum: a systematic review and clinical implications") has just been published in the same journal (Eating and Weight Disorders) ... and amazingly ... the authors created a table with similar issues addressing a number of other (frequently used) "questionnaires".
I have copied and pasted the table from the article here (which should be permissible as this is an open access article). I have also added some comments in square brackets.
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