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Comment on Ellegård et al. Clinical Nutrition 2019 "Distinguishing vegan-, vegetarian-, and omnivorous diets by hair isotopic analysis".

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

O'Connell, Tamsin C 

Abstract

In their paper published in Clinical Nutrition, Ellegård and colleagues report that they can distinguish between individuals on different habitual diets (vegan, vegetarian, omnivore) based on the carbon and nitrogen isotopic ratios of their hair (1). The finding is not new, and has been previously reported in the literature over the last 22 years (2-4). The authors do not properly acknowledge that previous work has shown similar or identical findings framed around the same hypothesis, despite such work being described and discussed in multiple works that they do cite (5-7). I would argue that such findings now come under the heading of common knowledge in many fields, even to the extent of being used as a student practical exercise in many university degrees across the world including in my own teaching – I have a database of hundreds of hair samples with associated dietary records.

Description

Keywords

Animal protein, Dietary assessment, Hair, Isotopic analysis, Nutritional biomarkers, Vegan, Diet, Humans, Vegans, Vegetarians

Journal Title

Clin Nutr

Conference Name

Journal ISSN

0261-5614
1532-1983

Volume Title

40

Publisher

Elsevier BV
Sponsorship
None