Piperata, Barbara A., U. of Colorado, Boulder, CO - To aid research on 'The Energetics of Lactation among Tropical Horticulturists Living in the Brazilian Amazon,' supervised by Dr. Darna L. Dufour
BARBARA A. PIPERATA, while a student at the University of Colorado in Boulder, Colorado, received funding in January 2002 to aid research on the energetics of lactation among tropical horticulturists in the Brazilian Amazon, under the supervision of Dr. Darna L. Dufour. Piperata's goal was to understand how tropical horticultural women met the increased energetic demands of lactation when they lived in conditions of food scarcity and practiced subsistence agriculture. She followed twenty-three women over their first six months of lactation and took measurements of their dietary intake, energy expenditure, and body composition at three times (forty days, two to four months, and six months postpartum) in order to identify the strategies used to meet the increased energy demands of lactation. One of the most interesting adaptive strategies these women used was the cultural practice called resguardo. During this forty-day immediate postpartum period, the women were excused from all strenuous work, including subsistence activities, and depended on other household members, especially husbands, to meet subsistence demands. By two to four months postpartum, women had returned to more normal activity patterns, and body fat stores became important for meeting energy needs. By six months postpartum, all women were supplementing their infants' diets, but most women continued to lose weight, indicating that their food intake was insufficient to meet their caloric needs. Thus, the strategies utilized by these women changed over the course of lactation. These findings illustrate the importance of an in-depth, longitudinal, biocultural approach to studying a life-history event such as lactation.
Piperata, Barbara A., and Lindsey M. Gooden Mattern. 2011. Longitudinal Study of Breastfeedng Structure and Women's Work in the Brazilian Amazon. American Journal of Physical Anthropology 144(2):226-237
Piperata, Barbara A. 2007. Nutritional Status of Ribeirinhos in Brazil and the Nutrition Transition. American Journal of Physical Anthropology 133(2):868-787.
Piperata, Barbara. 2004. Rural-to-Urban Migration in Latin America: An Update and Thoughts on the Model. American Journal of Human Biology 16:395-404
Piperata, Barbara. 2007. Diet, Energy Expenditure, and Body Composition of Lactating Ribeirinha Women in the Brazilian Amazon. American Journal of Human Biology 19:722-734
Piperata, Barbara. 2007. Nutritional Status of Ribeirinhos in Brazil and the Nutrition Transition. American Journal of Physical Anthropology 133:868-878
Vercellotti, Giuseppe, and Barbara A. Piperata. 2012. The Use of Biocultural Data in Interpreting Sex Differences in Body Proportions among Rural Amazonians. American Journal of Physical Anthropology 147(1):113-127.
Wiley, Dr. Andrea S., Indiana U., Bloomington, IN - To aid research on 'Milk Consumption and Child Growth in Pune, India: A Biocultural Investigation'
DR. ANDREA S. WILEY, Indiana University, Bloomington, Indiana, was awarded funding in October 2009, to aid research on 'Milk Consumption and Child Growth in Pune, India: A Biocultural Investigation.' The relationship between milk intake (cow or water buffalo), growth, and levels of Insulin-like Growth Factor I (IGF-I) was investigated in a cohort of approximately 175 rural and urban children from Pune (Maharastra) India. India is the world's largest milk producer and consumption has increased with gains in income and domestic production. Results of previous studies of milk intake and growth have been inconsistent, and there are no longitudinal studies tracking milk consumption, IGF-I and growth across childhood. Milk contains IGF-I, serum IGF-I levels increase after milk consumption, and IGF-I has been positively correlated with both milk intake and height. The cohort has detailed maternal data on diet during pregnancy, and growth and dietary data from birth to 2 years and IGF-I at birth and at 2 years. In this study children were seen twice at age 5-6 years, six months apart. At each visit a complete dietary and health questionnaire was administered, including detailed questions on milk and dairy intake. They were assessed anthropometrically and a blood sample was taken to measure IGF-I. Interviews with caretakers, Allopathic, and Ayurvedic practioners, and reviews of popular media were undertaken to gain an understanding of perceived relationships between milk consumption and child growth/health.
Garruto, Dr. Ralph M., State U. of New York, Binghamton, NY - To aid research on 'Longitudinal Studies of Health Transition and Culture Change in Vanuatu'
DR. RALPH M. GARRUTO, State University of New York, Binghamton, New York, received funding in April 2011 to aid research on 'Longitudinal Studies of Health Transition and Culture Change in Vanuatu.' Health burdens are changing in developing countries worldwide. Whereas chronic diseases such as hypertension and obesity were once primarily diseases of industrial countries, these now represent major health concerns in the developing world. Vanuatu, a South Pacific nation of 68 inhabited islands, is currently experiencing this change in disease patterns, or 'health transition.' Comparing chronic disease risk and population characteristics among islands could help to clarify how health transitions develop, and the social, behavioral, and economic factors driving the change. From June-August 2011, nearly 2000 individuals from five islands participated in surveys of behavioral, nutritional and economic patterns and body measurements (such as height, weight, and body fat). Preliminary results indicate that health patterns change in ways specific to the behaviors and economic conditions of each island and the degree of outside influence, regardless of geographic remoteness. Chronic disease risk is also influenced by the risk of infectious diseases, which impact not only an individual's phenotype, but also behavioral and economic factors (such as growth of the tourism industry) that in turn affect the population's health. This project contributes to our understanding of human biological variation across geographical regions and the factors that determine health outcomes in Pacific Island populations.
Lee, Sarah E., U. of Georgia, Athens, GA - To aid research on 'Nutritional and Health Consequences of Children's Self-Provisioning Activity in Xalapa, Mexico,' supervised by Dr. Alexandra A. Brewis
SARAH E. LEE, then a student at the University of Georgia, Athens, Georgia, received funding in September 2003 to aid research on 'Nutritional and Health Consequences of Children's Self-Provisioning Activity in Xalapa, Mexico,' supervised by Dr. Alexandra A. Brewis. This dissertation explores how children's own provisioning activities might influence their well-being under conditions of extreme urban poverty. The immediate purpose of this study was to determine whether self-provisioning children had a measurably different nutrition and health status than children living under the same circumstances who do not engage in provisioning activities (such as working, begging or foraging for food). This dissertation research was conducted in ten neighborhoods in the shantytowns surrounding the city of Xalapa, Veracruz, Mexico from October 2003 until December 2004. The researcher collected a sample size of 95 children between the ages of 8 and 12 who lived with their families. Six different data sets were collected, including 95 household interviews, 285 separate interviews concerning children's time allocation, diet, and illness. The researcher conducted 1425 hours of observation (fifteen hours per child), which provides very rich and accurate data concerning the time allocation and dietary habits of provisioning and non-provisioning children. On-going analysis indicates that the data will support the research question. There does seem to be an age and gender dimension in provisioning actives. Children shared their resources with their siblings, which is a benefit to the siblings, but also shared resources within peer groups. Children who engage in provisioning activities do seem at least marginally healthier, and some are taller than their counterparts who do not engage in provisioning activities. It is likely that the final analysis will show that children who work, beg, or forage for food, will have benefited from their activities.
Pomeroy, Dr. Emma Elizabeth, U. of Cambridge, Cambridge, UK - To aid research on 'Patterns of Growth Trade-offs Related to Early Life Environment: Insights from a High-altitude Model'
Preliminary abstract: Human growth is sensitive to environmental stressors such as nutrition and high altitude hypoxia (reduced oxygen availability). Environmental factors impact not only height, but also the relative sizes of different parts of the body such as the limbs, trunk, head and organs, and influence body composition (relative proportions of muscle and fat). It is thought that environmental stressors cause the body to trade-off growth in some tissues to protect key organs (e.g. the brain), although the mechanisms underlying these trade-offs, and their evolutionary significance, are not well understood.
I will investigate the nature and pattern of growth trade-offs between the limbs, trunk, head and organs by comparing the physical characteristics of children and their mothers living at high and low altitude in India. Understanding the relationship between limb proportions, organ sizes, body composition and the environment will help to clarify the nature and evolutionary basis of growth trade-offs in relation to environmental stressors. As maternal characteristics (e.g. height, weight) may also influence their child's early growth, this study will offer insight into whether adaptations in growth may be passed non-genetically across multiple generations. This research will advance our understanding of how the body adapts to environmental stress during development.
Young, Bonnie Nadyne, U. of New Mexico, Albuquerque, NM - To aid research on 'Effects of Genetic Ancestry and Socio-Cultural Factors on Susceptibility to Tuberculosis in Mexico,' supervised by Dr. Keith L. Hunley
BONNIE N. YOUNG, then a student at the University of New Mexico, Albuquerque, New Mexico, received funding in October 2009, to aid research on 'Effects of Genetic Ancestry and Socio-Cultural Factors on Susceptibility to Tuberculosis in Mexico,' Supervised by Dr. Keith L. Hunley. Active tuberculosis (TB) varies substantially across regions and ethnic groups due to different genetic and environmental factors. Less TB among those with high European ancestry suggest better socioeconomic conditions and possibly innate resistance, although the impact of ancestry remains unresolved. This study assesses the effect of genetic ancestry on active TB, and the interactions between ancestry and contextual factors. Fieldwork occurred over six months at the UANL Hospital in Monterrey, Mexico. A case-control study was conducted among 189 individuals with active pulmonary TB (97 cases), and latent TB infection (92 controls). Data were collected from interviews, mouthwash samples, and medical chart reviews. Cases and controls were similar in distributions of sex, indigenous ethnicity, marital status, and prevalence of chronic conditions. Cases had a significantly lower socioeconomic status, despite recruitment from similar populations. Smoking was higher among cases than controls (13.8 vs. 3.9 average pack years; p=0.01), as was diabetes (29.9% vs. 8.7%) and alcoholism (13.4% vs. 1.1%). Proportions of genetic ancestry (measured by ancestry informative markers) are pending, but will be added to final regression models, along with significant contextual factors. This project will elucidate the interactions of genetic and socio·cultuml correlates of active TB in an urban Mexican population.
George, Ian Douglas, U. of Missouri, Columbia, MO - To aid research on 'Mapping the Cerebrocerebellar Language Network and its Role in Human Neuroevolution,' supervised by Dr. Kristina Aldridge
Preliminary abstract: Language is arguably the key factor that has influenced the evolution of the human brain. It is likely that increased language capabilities in humans are associated with both gross morphological changes as well as with novel neural networks. Endocasts, our only direct evidence of the brains of human ancestors, have revealed a disproportionate increase in size of the cerebellum relative to the cerebrum. Moreover, it is thought the cerebellum plays an important role in modulating language production through neural networks with the cerebellum. This project seeks to map the connectivity between the cerebrum and cerebellum and establish the pattern of the language-specific cerebrocerebellar network (LSCN) in the adult human brain thought the use cutting-edge in vivo quantitative imaging techniques. The proposed research will be the first to verify that the cerebellum is a key component of the language network in the brain. In addition, the proposed research will provide critical data on how much can be known about language from the study of fossil brain endocasts by testing the assumption that surface morphology reflects the architecture of underlying brain structure, enabling us to test the hypotheses that make predictions about the behavior of fossil hominin ancestors from endocast data.
Liebert, Melissa Ann, U. of Oregon, Eugene, OR - To aid research on 'Psychosocial Stress and Culture Change among Indigenous Amazonian Shuar: Integrating Developmental, Biological, and Cognitive Perspectives,' supervised by Dr. Lawrence S. Sugiyama
PROVIDE A GENERAL DESCRIPTION OF YOUR PROJECT IN PLAIN ENGLISH (UNFORMATTED -- WITHOUT BULLETS OR NUMBERED LISTS -- 200 WORD MAXIMUM).
Recent studies among indigenous populations suggest that psychosocial stress is an important pathway through which socioecological changes associated with market integration (MI) shape human biology. Surprisingly, however, little research has systematically investigated this topic. In particular, few studies have examined how factors associated with MI influence children's perceptions of the shifting cultural milieu and how these experiences become biologically embodied to impact stress, life history trade-offs, and health. Given that early life stress can induce enduring physiological dysregulation across multiple systems, research is greatly needed to capture the nuances of MI that affect developmental stress and long-term health.
To address these issues, this project will integrate methods from biological and cognitive anthropology with rich ethnographic data on culture change and perceptions of lifestyle success in order to elucidate how MI affects stress physiology and life history patterns among Indigenous Shuar children of Amazonian Ecuador. This stud