2007/06/01 by Stephen C. Cunnane, Mélanie Plourde, Kathy Stewart +1 · 41 citations
Nursing · Medicine · #Fatty Acid Research and Health #Diet and metabolism studies #Biochemical Analysis and Sensing Techniques #Docosahexaenoic acid #Encephalization #Hum #Rebuttal #Biology #Zoology #Fatty acid #Evolutionary biology #Polyunsaturated fatty acid #Biochemistry #Brain size #Archaeology #History #Medicine
paper · doi:10.1002/ajhb.20673
published in American Journal of Human Biology 19(4), 578-581 (Wiley)
openalex publication_date 2007/06/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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-alpha-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.