Sex and Geographic Differences in Health of the Early Inhabitants of the Mariana Islands

The early inhabitants of the Mariana Islands encountered numerous challenges that likely affected their health, including island size, vulnerability to natural disasters, availability of resources, and shifts in climate. Other factors that could have led to differences in health include biological sex, social status, diet, and genetic factors (e.g., host resistance). This article examines the effects of environment and biological sex on the health of the earliest inhabitants of the Mariana Islands through an analysis of indicators of health recorded in skeletons from Guam, Rota, Tinian, and Saipan. The indicators of health investigated include cribra orbitalia (CO), linear enamel hypoplasia (LEH), stature, trauma, infection, and dental disease (antemortem tooth loss [AMTL], dental caries, alveolar defect, dental calculus, and attrition). Betel staining of teeth is also examined. To determine if there are differences attributable to sex, male and female data are compared for each island separately and then for all the islands combined. To examine differences between islands, separate comparisons of these indicators are made for males and females. Examining islands separately, no significant sex differences were observed for CO, spondylolysis, fractures, treponemal infection, AMTL, or dental calculus. Significant sex differences were observed for LEH, betel-stained teeth, and the other dental pathologies. With few exceptions, sex differences in the observed indicators were consistent across islands. Observing male and female health across the islands revealed no significant differences for stature, trauma or infections. For the remaining indicators, significant differences were observed. Similarities in health between Guam and Rota in the south and Tinian and Saipan located farther north suggest that geography, environmental constraints, and social and cultural networking were important variables affecting the health and lives of the early inhabitants of the Mariana Islands

Biocultural Practices during the Transition to History at the Vat Komnou Cemetery, Angkor Borei, Cambodia

Mainland Southeast Asia underwent dramatic changes after the mid-first millennium B.C.E., as its populations embraced new metallurgical and agricultural technologies. Southeast Asians transformed their physical and social environments further through their participation in international maritime trade networks. Early state formation characterized much of the mainland by the mid-first millennium C.E. We examined a protohistoric (200 B.C.E.–200 C.E.) skeletal sample from the Vat Komnou cemetery at Angkor Borei in the Mekong Delta (southern Cambodia) to understand the health impacts of this changing environment. Degenerative joint disease patterns indicate a distinct sexual division of labor. Although intentional dental filing was practiced, its impact on oral-dental health could not be determined. Dental pathologies suggest a mixed diet with more fibrous foods and a lower reliance on soft, processed agricultural foods. A broad-spectrum diet and varied use of the local environment are inferred from the faunal evidence. Stable isotope ratios indicate a relatively greater reliance on fish and estuarine dietary resources than on terrestrial protein. Affinities with other groups in the region are suggested by the cultural practices of the relatively tall, healthy inhabitants from Vat Komnou

Intensification of Agriculture at Ban Chiang: Is There Evidence from the Skeletons?

Human skeletal remains excavated in 1974-1975 at Ban Chiang, a premetal to Bronze/Iron Age site located in northeastern Thailand, are used to examine the health effects of sedentism and agricultural intensification. The archaeological sequence provides evidence for the introduction of iron and water butfulo in the Middle period, suggesting the beginning of intensified agriculture. The effects of this agricultural intensification on the paleodemography, health, and patterns of traumatic injury of Ban Chiang's early inhabitants is examined. The skeletal and dental attributes examined include palaeodemographic parameters, dental caries, dental enamel hypoplasia, cribra orbitalia, stature, skeletal infections, and trauma. The results of this analysis are mixed. There are decreases in life expectancy and mean age-at-death that are consistent with a decline in health over time, but evidence for an increase in fertility, expected with intensified agriculture, is not found. Expected temporal increases in dental enamel hypoplasia and adult cribra orbitalia are documented. However, the expected decline in adult stature and expected increases in dental caries, cribra orbitalia in subadults, skeletal infection, and traumatic injury are not found. Overall, the skeletal indicators support continuity in Ban Chiang health, suggesting continuous reliance on a broadly based subsistence system. These findings do not fit the typical pattern demonstrated for other human groups experiencing the transition to sedentism and intensified agriculture and may support the contention that Southeast Asia's archaeological sequence differs markedly from those studied elsewhere in the world. KEYWORDS: palaeopathology, palaeodemography, dental pathology, bioarchaeology, rice, agriculture, prehistory, Thailand, Southeast Asia

Resource utilisation and regional interaction in protohistoric Cambodia - The evidence from Angkor Borei

Angkor Borei is a protohistoric (ca. 500 BCE − 500 CE) site in southern Cambodia (Takeo Province), on the western edge of the Mekong Delta. Cambodia's protohistoric period, concurrent with the Iron Age elsewhere in mainland Southeast Asia, is a period characterised by major socio-political transformation: early state formation, incorporation into the South China Sea network, and urbanisation. First occupied in the mid-first millennium BCE, Angkor Borei became the delta's largest regional centre during the Funan period (c. 1st-6th century CE). This study builds on previous skeletal chemistry research, increasing the sample set by additional 15 individuals, to refine our understanding of the residential behaviour and exploitation strategies of the Angkor Borei mortuary sample. Using strontium, oxygen, carbon, and nitrogen isotope measurements from tooth enamel and bone, and incorporating bioavailable baseline strontium isotope data, we find that the majority of individuals have a childhood 87Sr/86Sr signature consistent with locally acquired food resources. For those individuals with outlier 87Sr/86Sr values, utilisation of the broader regional environment is suggested without the need to infer longdistance migration. The evidence for population stability at Angkor Borei during this dynamic period of increasing regional societal complexity indicates that the catalysts for change are manifold. Many factors are likely to have contributed to the genesis of early state society including social differentiation, cultural exchange, mercantile activity, residential mobility, and settlement growth, rather than one 'external' prime causative factor.We wish to thank the Australian Research Council (DP0984968 and DP110101997) for funding of the isotopic analysis presented in this stud