Anthropology

Background
In a context with strong rhetorical support for breastfeeding in the health system, yet extremely low rates of breastfeeding after hospital discharge, UK women’s decisions about infant feeding reflect the reality of competing priorities in their lives, including obtaining adequate sleep. Popular wisdom in the UK tightly links breastfeeding and inadequate night-time sleep. Mothers are advised by peers and family to introduce formula or solid foods to infants to promote longer sleep.

Objectives
The first objective of this study was to investigate women’s understandings of the nature of infant sleep and their perceptions of links between infant feeding method and sleep. The second was to explore how these perceptions influence infant feeding and sleep practices. Underpinning our work is the understanding that infant care choices result from trade-offs by which mothers strive to balance infant- and self-care.

Methods
We conducted seven focus groups with mothers of infants in two regions of the UK. Verbatim transcripts were thematically coded and emergent themes were identified.

Results
We found clearly diverging narratives between breastfeeding and formula-feeding mothers. Breastfeeding mothers viewed the fragmentary nature of infant sleep as natural, while mothers who were formula feeding felt this was a problem to be fixed.

Conclusions and Practice
The strategies used to promote infant and maternal sleep in each group were aligned with their underlying perception of how infant sleep works. Maternal perceptions of the nature of infant sleep and its relation to infant feeding method impact infant care practices in the first year of life.

Treponemal disease is known to be associated with the compromised community health of permanent village settlement. This association explains its high visibility in the village-based, arguably chiefdom level, agriculturalist societies of late prehistoric (AD 1300–1600) North America. Within chiefdom-level societies, health differences have often been demonstrated between mortuary-defined “elite” and “nonelite” individuals. This theoretically should predict status-based differences in treponemal disease visibility. The prediction is tested in a five-site osteological sample (N = 650) from the Dallas phase (AD 1300–1550), a simple mortuary-defined two-tiered presumptive chiefdom level maize agriculturalist socioeconomic context from lower east Tennessee. The Dallas phase results affirm a general pre-Colombian North American pattern of no sex differences and display comparable adult to subadult frequencies. The study also reveals that given a sufficient sample size, “elites” do indeed exhibit a significantly lower frequency of tertiary stage treponemal disease. This can be attributed to better baseline health, which has been previously demonstrated in this sample. It may also be affected by the mortuary inclusion of achieved status individuals whose good health may have facilitated sociopolitical advancement. Another pattern that emerged is an apparent young adult age bias in disease visibility. This suggests that tertiary treponemal disease morbidity may either directly or synergistically factor in early adult age at death. Future research will address the veracity of this association. Am J Phys Anthropol, 2011. © 2010 Wiley-Liss, Inc.

Diffuse idiopathic skeletal hyperostosis (DISH) is a skeletal disease characterized by ligamentous ossification of the anterolateral side of the spine. The radiographs of the spine of 69 patients (22 males, 47 females, mean age 64.97±8.83 years) affected by DISH according to Resnick's criteria were selected. A lower rate of lumbar spine involvement (71%) and a different distribution between sexes were demonstrated, as compared to the data from the literature. Data on relationships among extent of hyperostosis, occupation and metabolic disorders suggest that an important role might be played by the exposure to microtrauma, while, in subjects affected by a metabolic disorder, this condition would represent a prevalent pathogenetic factor. These data underline some peculiarities in the clinical picture of DISH in the population from Campania, that could depend on genetic factors.

Diffuse idiopathic skeletal hyperostosis (DISH or Forestier’s disease) is a pathological condition of unknown etiology characterized by the exuberant antero-lateral flowing (‘dripping candle wax’) ossi- fication of the anterior spinal ligaments. Clinical data indicate it is a progressive male-predilected pathology manifested in middle age, which steeply rises in prevalence after aged 60. It has become pale- opathologically relevant because it has been clinically associated with an affluent lifestyle. Archeological examination of the prevalence of DISH is often undertaken on European samples and frequently in monas- tic contexts. There are no prevalence data for pre-Columbian samples from North America. The present study establishes baseline information from four prehistoric Late Mississippian period (AD 1300–1600) samples (N = 389) from the upper Tennessee River Valley. Two probable cases and one possible case of DISH (all male) are identified, reflecting less than one percent of the adult sample, and 1.2 percent (2/172) of males. The low prevalence compared to European monastic samples and non-New World cemetery contexts suggests socioeconomic or interpopulational genetic differences that may be tested with sub- sistence and community health-status controlled osteoarchaeological comparisons within and outside of North America.

Subsistence and Settlement Correlates of Treponemal Disease: Temporal Patterns in Pre-Columbian East Tennessee
MARIA OSTENDORF SMITHa* AND TRACY K. BETSINGERb
a Department of Sociology and Anthropology, Illinois State University, Normal, IL 61790-4660, USA
b Department of Anthropology, State University of New York College at Oneonta, Oneonta, NY 13820, USA
After ca 1000 BC, coinciding with the transition to sedentism, tertiary stage treponemal disease apparently becomes osteologically pervasive in pre-Columbian North America. However, varying interobserver trepone- mal disease diagnostic thresholds, sampling error and the possibly ecosensitive nature of the pre-Columbian nonvenereal treponemal disease variants (i.e. yaws and treponarid) prevents subsistence-settlement pattern from becoming a reliable predictor of treponemal disease prevalence. This is particularly true of later prehis- tory with the transition from horticulture to intensive, maize-based agriculture. To address whether treponemal disease visibility does vary across this specific subsistence-settlement threshold, subadults (4+ years of age) and adults from 11 late prehistoric sites (N = 997) from the same geographic area of East Tennessee were sampled for the presence of treponemal disease. Six sites (N = 279) primarily date to the Late Woodland period (AD 700–900) and culturally belong to what is referred to as the Hamilton mortuary complex. The sample is archaeologically characterised as horticulturalist with presumably a dispersed farmstead or hamlet settlement pattern. Six sites (N = 718) date to the Late Mississippian (AD 1300–1550, Dallas phase) and are maize-intensive agriculturalists with a large, aggregate village settlement pattern. The sites were examined using three different levels of treponemal disease diagnostic confidence.
Treponemal disease raw frequency does indeed differ across the levels of diagnostic confidence between the total Late Woodland horticulturalist sample (4.3–5.5%) and total Late Mississippian maize agriculturalist sample (5.4–6.5%). The meaning is complex as the Dallas phase sample may have a socially segregated elite; the mound-interred (1.8%) relative to the village-interred (6.1–7.4%) exhibited significantly fewer cases of treponemal disease. Tentatively, treponemal disease visibility does appear to co-associate with sedentism and perhaps (if the mound-interred Dallas individuals are elites) also aggregated settlement.

Apotropaic observances-traditional practices intended to prevent evil-were not uncommon in post-medieval Poland, and included specific treatment of the dead for those considered at risk for becoming vampires. Excavations at the Drawsko 1 cemetery (17th–18th c. AD) have revealed multiple examples (n56) of such deviant burials amidst hundreds of normative interments. While historic records describe the many potential reasons why some were more susceptible to vampirism than others, no study has attempted to discern differences in social identity between individuals within standard and deviant burials using biogeochemical analyses of human skeletal remains. The hypothesis that the individuals selected for apotropaic burial rites were non-local immigrants whose geographic origins differed from the local community was tested using radiogenic strontium isotope ratios from archaeological dental enamel. 87Sr/86Sr ratios (50.7112¡0.0006, 1s) from the permanent molars of 60 individuals reflect a predominantly local population, with all individuals interred as potential vampires exhibiting local strontium isotope ratios. These data indicate that those targeted for apotropaic practices were not migrants to the region, but instead, represented local individuals whose social identity or manner of death marked them with suspicion in some other way. Cholera epidemics that swept across much of Eastern Europe during the 17th century may provide one alternate explanation as to the reason behind these apotropaic mortuary customs, as the first person to die from an infectious disease outbreak was presumed more likely to return from the dead as a vampire.