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Docosahexaenoic acid and shore-based diets in hominin encephalization: A rebuttal

✍ Scribed by Stephen C. Cunnane; Mélanie Plourde; Kathy Stewart; Michael A. Crawford

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
82 KB
Volume
19
Category
Article
ISSN
1042-0533

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✦ Synopsis

Abstract

Carlson and Kingston ([2007]: Am J Hum Biol 19:132–141) propose that preformed dietary docosahexaenoic acid (an omega‐3 fatty acid in fish) did not have a significant role in hominin encephalization. Their position hinges on claiming that humans are able to make sufficient docosahexaenoic acid from the plant‐based “parent” omega‐3 fatty acid—α‐linolenic acid. They also suggest that hominin fish consumption occurred too late to have materially influenced encephalization. The authors quantify here a summary of the published data showing that humans cannot make sufficient docosahexaenoic acid to maintain normal infant brain development. The authors also provide evidence that the fossil record shows that some of the earliest hominins were regularly consuming fish. Hence, we reject Carlson and Kingston's position and reiterate support for the concept that access to shore‐based diets containing docosahexaenoic acid was necessary for hominin encephalization beyond the level seen in the great apes. Am. J. Hum. Biol. 19:578–581, 2007. © 2007 Wiley‐Liss, Inc.

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