Evidence of variability in carbohydrate consumption in prehistoric fisher-hunter-gatherers of Southeastern Brazil: Spatiotemporal trends of oral health markers

American Journal of Physical Anthropology
Luis Pezo-Lanfranco

Abstract

In this study, we evaluate the role of plants in the diet of fisher-hunter gatherers adapted to highly productive coastal environments. Oral health markers were used to track spatiotemporal variations (regional and diachronic) in the composition of carbohydrate in the diets of prehistoric shell mound builders (sambaqui) from the Southeast of Brazil. Our main objective is to test the supposed stability in the dietary habits of sambaqui populations and identify modulating effects of chronological, cultural, and/or ecological factors. Eighteen oral health markers (divided into three categories: caries, periodontal disease, and dental wear) were applied in 233 individuals from 7 sambaquis (dated between 4800 and 1100 BP) from 5 geographic regions. Our results reveal variable oral health patterns among sites. Despite that, we found a number of common features, such as dental wear and associated pulp lesions. Some oral health patterns are compatible with cariogenic diets and high carbohydrate consumption. Our analyses suggest that plant resource management is plausible at some sites and support the emerging evidence that plant consumption among sambaqui populations was driven more by ecologic factors than chronological or cultural on...Continue Reading

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