Claudia Valeggia
Dados Biográficos
| ID | 96458 |
|---|---|
| NOME | Claudia Valeggia |
| PRENOMES | Claudia |
| SOBRENOME | Valeggia |
| ASSINATURA | VALEGGIA C |
| AFILIAÇÕES | Yale University |
| ORCID | 0000-0003-3589-6890 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 45 |
| TOTAL DE CITAÇÕES | 167 |
| TOTAL COMO AUTOR | 45 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1999 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 6 |
A Bayesian Modeling Approach to Optimize Longitudinal Biomarker Sampling Schedules Using Hormonal Data
Navigating Change
This Pilagá community is experiencing a dietary transition toward westernized foods, driven by biosociocultural factors that mirror broader shifts in local food systems and consumption patterns
Contaminant Exposure Profiles Demonstrate Similar Physiological Effects Across Environments Despite Unique Profile Composition in Formosa, Argentina, and Connecticut, USA
OBJECTIVE: Exposure to environmental contaminants is globally universal. However, communities vary in the specific combination of contaminants to which they are exposed, potentially contributing to variation in human health and creating "locally situated biologies." We investigated how environmental exposures differ across environments by comparing exposure profiles between two contexts that differ markedly across political, economic, and sociocu…
Trayectorias hormonales asociadas con la edad a la menarca y el aumento de peso en niñas originarias Qom/Toba
In this exploratory study, we analyzed the hormonal and growth trajectories of 61 Qom/Toba girls aged 8 to 14 years from a peri-urban community in Formosa, Argentina. Monthly measurements of weight and height were taken, and eight urine samples were collected every three months until the menarche was reported or until the end of the study. The urine samples were analyzed using enzyme immunoassay to determine testosterone and C-peptide levels. Bay…
Longitudinal analysis of cortisol changes during pubertal development in indigenous Qom girls
Pubertal research has primarily focused on hypothalamic–pituitary–gonadal axis (HPG) regulation of puberty, though the hypothalamic–pituitary–adrenal axis (HPA) is increasingly considered critical. Heightened HPA function proxied by increasing cortisol levels may play a role in accelerated pubertal timing. However, the extent to which cortisol varies across ages and its relation to pubertal changes in linear growth are less well substantiated. We…
Infrastructural violence and resistance in Namqom
Infrastructure connects – and disconnects – people and communities. In this paper, we analyze how the Qom (an Indigenous population in the Gran Chaco region of Argentina) navigate marginalization enacted through infrastructure in Formosa, Argentina. Drawing upon two seasons of fieldwork that involved surveys, semi-structured interviews, and participant observation, we focus on experiences of Qom people in the peri-urban village of Namqom. We exte…
Can women hunt? Yes. Did women contribute much to human evolution through endurance hunting? Probably not
A recent article by Ocobock and Lacy (Ocobock & Lacy, 2023) argues that human females are "just as, if not more, capable as males at performing arduous physical tasks" and therefore likely to have "meaningfully engaged in hunting during our evolutionary past."This is a direct challenge to the (generally accepted) canon that gendered subsistence activities are a key feature of the human ecological niche, with men typically contributing more to sub…
Body norms, body image, and media in a market‐integrating indigenous population in Argentina
OBJECTIVE: The aim of this study was to investigate the relationship between media, body norms, and body image among the Qom, a market-integrating indigenous population in Argentina that has historically idealized larger body sizes. METHODS: With men and women (n = 87), we measured frequency of media/technology use through a Likert-type questionnaire. Using the Stunkard Figure Rating Scale, we asked participants to select the most healthy and ide…
Demystifying mentorship
Si usted es antropólogo, bueno, hablemos del viento
El cambio climático y el Antropoceno plantean numerosos desafíos para todos los sectores de la humanidad. Desde la antropología, uno de ellos es como utilizar el profundo conocimiento situado sobre las relaciones humano-ambiente para la adaptación al cambio ambiental acelerado, en especial de las comunidades de frontera que son a la vez el objeto de estudio tradicional de la disciplina y los principales afectados por el deterioro ambiental. Se pr…
C‐reactive protein in adult Samoans
These data are among the first to demonstrate CRP correlates in a sample of adult Samoans. CRP differed by sex and was associated with BMI, adiposity, and some cardiometabolic risk markers. These data align with findings in other populations
Comparison of two human infant urine collection methods for measuring estrone‐3‐glucuronide
OBJECTIVES: Current human infant urine collection methods for the field are problematic for the researcher and potentially uncomfortable for the infant. In this study, we compared two minimally invasive methods for collecting infant urine: organic cotton balls and filter paper. MATERIALS AND METHODS: We first collected urine from infants using the clean catch method. We then used those samples to compare the performance of filter paper and cotton…
Postpartum amenorrhea duration by sex of the newborn in two natural fertility populations
Objectives Postpartum amenorrhea (PA) affects the length of interbirth intervals and thus is intimately related to human life history strategies. PA duration appears to be influenced by maternal energetic status. In humans, as in other mammals, sons are costlier than daughters. Thus, we hypothesize that, in energetically constrained environments, a newborn's sex should be associated with PA duration. Methods We analyzed data from two natural fert…
Associations between fecal cortisol and biparental care in a pair‐living primate
OBJECTIVES: We quantified variation in fecal cortisol across reproductive periods in Azara's owl monkeys (Aotus azarae) to examine physiological mechanisms that may facilitate biparental care. Specifically, we evaluated evidence for the explanation that owl monkeys have hormonal mechanisms to mobilize energy during periods when each sex is investing heavily in reproduction, that is, the gestation period for females and the infant care period for …
Perceptions of the healthiest body in a market‐integrating indigenous population in Argentina
Objectives Market integration seems to induce gender‐specific generational change in health‐related perceptions of body size. We predicted that among the Qom of Argentina, younger women would perceive comparatively thinner bodies as healthiest, demonstrating thin‐idealizing body norms, and older women would retain culturally rooted perceptions of heavier bodies as healthiest. As traditional and globalized body size ideals are different for men, w…
Incipient Neighborhood and Socioeconomic Stratification Associated to Nutritional Status in Indigenous Qom Preschoolers from Formosa, Argentina
Indigenous populations in Latin America are among the most socially vulnerable groups and their children often suffer severe deprivation in terms of access to proper nutrition, water, and shelter. This study describes the nutritional status of Qom preschoolers in general, and by neighborhood area and family's socioeconomic characteristics in a peri-urban village of Formosa, Argentina. Across-sectional study was carried out between January and Dec…
Cesarean birth and the growth of Yucatec Maya and Toba/Qom children
OBJECTIVE: Cesarean delivery is often epidemiologically associated with childhood obesity. However, little attention is paid to post-birth modulatory environments, and most studies are conducted in settings where obesity arises for a number of reasons in addition to birth mode. We therefore assess population differences in the relationship between birth mode and childhood growth using data from rural and peri-urban Latin American indigenous popul…
Birth mode and infectious morbidity risks in Qom children of Argentina
OBJECTIVES: Cesarean delivery may increase childhood infectious morbidity risks via altered birth exposures and subsequent immune, microbial, and epigenetic development. Many Latin American indigenous populations experience dual burdens of infectious and chronic diseases, and are particularly vulnerable to rising rates of cesarean delivery and associated adverse outcomes. The Qom/Toba are an indigenous population in Argentina experiencing rapid l…
Systematic Review of Chronic Discrimination and Changes in Biology During Pregnancy Among African American Women
Timing of pubertal growth and menarche in indigenous Qom girls of Argentina
Qom participants in this study exhibit relatively fast pubertal development as compared to other Latin American indigenous populations studied previously by others. Genetic and environmental factors influencing body size, diet and/or activity levels should be investigated further in this population
A time to be born
OBJECTIVES: The present study aimed at investigating the timing of birth across the day in a rural population of indigenous and nonindigenous women in the province of Formosa, Argentina in order to explore the variation in patterns in a non-Western setting. MATERIALS AND METHODS: This study utilized birth record data transcribed from delivery room records at a rural hospital in the province of Formosa, northern Argentina. The sample included data…
The ecology of anemia
OBJECTIVES: The Toba/Qom of Namqom are an indigenous community native to the Gran Chaco region of northern Argentina. Historically seminomadic foragers, the diet of peri-urban community members has rapidly changed from high-protein, high-fiber to hypercaloric, processed. This study aims to understand the impact of this nutritional transition on aspects of women's health by exploring the relationship between prevalence of anemia and current diet c…
Growth patterns among indigenous Qom children of the Argentine Gran Chaco
OBJECTIVES: This study describes and compares the growth strategies of rural (Western) and peri-urban (Eastern) Qom indigenous children from Argentina. METHODS: Height and weight were cross-sectionally assessed in Western (n = 263) and Eastern Qom (n = 512) individuals aged 0-18.9 years. Height-for-age (HAZ), weight-for-age (WAZ), and BMI-for-age (BMIZ) z-scores were calculated with an LMS software. Results were organized into four age categories…
Impact of Universal Health Coverage on Child Growth and Nutrition in Argentina
Objectives. To estimate trends of undernutrition (stunting and underweight) among children younger than 5 years covered by the universal health coverage programs Plan Nacer and Programa Sumar. Methods. From 2005 to 2013, Plan Nacer and Programa Sumar collected high-quality information on birth and visit dates, age (in days), gender, weight (in kg), and height (in cm) for 1.4 million children in 6386 health centers (13 million records) with broad …
Health of Indigenous Peoples
Indigenous populations worldwide are experiencing social, cultural, demographic, nutritional, and psychoemotional changes that have a profound impact on health. Regardless of their geographical location or sociopolitical situation, health indicators are always poorer for indigenous populations than for nonindigenous ones. The determinants of this gap are multiple and interactive, and their analysis requires a biocultural framework. Indigenous pop…
Health of Indigenous Peoples
Indigenous populations worldwide are experiencing social, cultural, demographic, nutritional, and psychoemotional changes that have a profound impact on health. Regardless of their geographical location or sociopolitical situation, health indicators are always poorer for indigenous populations than for nonindigenous ones. The determinants of this gap are multiple and interactive, and their analysis requires a biocultural framework. Indigenous pop…
The Biology of Paternal Care in Human and Nonhuman Primates
Among primates, intense paternal care is manifested in only a few distantly related species, including humans. Thus, neither purely phylogenetic nor socioecological hypotheses can explain its presence or the variability in the expression of paternal behaviors. Traditional theoretical models for the evolution of paternal care can now be reexamined, focusing on male-female interactions as a possible key to understanding parental strategies. At a pr…
Nutritional status and socioeconomic change among Toba and Wichí populations of the Argentinean Chaco
Indigenous populations in transition
Metabolic syndrome was highly prevalent in this indigenous community, which places them at an increased risk for cardiovascular disease
Girl helpers and time allocation of nursing women among the Toba of Argentina
Taking the Lab to the Field
The incorporation of biological measures in social science research allows for the development of robust models, with greater explanatory power. By analyzing the underlying proximate causes of fertility and mortality, biodemographers have been able to model demographic patterns more accurately. Recent technological advances are making possible the analysis of biological samples collected using minimally invasive methods. Methods and techniques ar…
Impact of Universal Health Coverage on Child Growth and Nutrition in Argentina
Objectives. To estimate trends of undernutrition (stunting and underweight) among children younger than 5 years covered by the universal health coverage programs Plan Nacer and Programa Sumar. Methods. From 2005 to 2013, Plan Nacer and Programa Sumar collected high-quality information on birth and visit dates, age (in days), gender, weight (in kg), and height (in cm) for 1.4 million children in 6386 health centers (13 million records) with broad …
A time to be born
OBJECTIVES: The present study aimed at investigating the timing of birth across the day in a rural population of indigenous and nonindigenous women in the province of Formosa, Argentina in order to explore the variation in patterns in a non-Western setting. MATERIALS AND METHODS: This study utilized birth record data transcribed from delivery room records at a rural hospital in the province of Formosa, northern Argentina. The sample included data…
Infrastructural violence and resistance in Namqom
Infrastructure connects – and disconnects – people and communities. In this paper, we analyze how the Qom (an Indigenous population in the Gran Chaco region of Argentina) navigate marginalization enacted through infrastructure in Formosa, Argentina. Drawing upon two seasons of fieldwork that involved surveys, semi-structured interviews, and participant observation, we focus on experiences of Qom people in the peri-urban village of Namqom. We exte…
Can women hunt? Yes. Did women contribute much to human evolution through endurance hunting? Probably not
A recent article by Ocobock and Lacy (Ocobock & Lacy, 2023) argues that human females are "just as, if not more, capable as males at performing arduous physical tasks" and therefore likely to have "meaningfully engaged in hunting during our evolutionary past."This is a direct challenge to the (generally accepted) canon that gendered subsistence activities are a key feature of the human ecological niche, with men typically contributing more to sub…
Women's health in urban Mali
The Reproductive Transition in an Indigenous Population of Northern Argentina
Latin America has been registering a fast decrease in fertility rates since the mid-twentieth century. This change can be linked to the modernization process these populations have been undergoing. However, research with Latin American indigenous populations, which are undergoing relatively similar lifestyle changes, shows very different trends in fertility. The aim of this study was to analyze fertility patterns in the indigenous Toba community …
Reproductive biology of female titi monkeys (Callicebus moloch) in captivity
Titi monkeys (Callicebus spp., Cebidae) are monogamous neotropical primates that live in family-like groups typically consisting of an adult monogamous pair and one or two young. Knowledge about the reproductive biology of this genus is scanty. This study investigated the reproductive biology of female dusky titi monkeys (Callicebus moloch). An initial analysis characterized reproductive parameters of 32 females from a captive colony maintained f…
Girl helpers and time allocation of nursing women among the Toba of Argentina
Impact of breastfeeding on anthropometric changes in peri‐urban Toba women (Argentina)
We present an analysis of the effect of lactation on average maternal anthropometric and body composition measures in a population of Toba women in Formosa, Argentina. This indigenous population is undergoing a continuing transition from a seminomadic hunter–gatherer lifestyle to a sedentary, peri‐urban one. Using a mixed‐longitudinal design, we measured monthly maternal body mass index (BMI), body fat percentage, and triceps and subscapular skin…
Lactational Amenorrhoea in Well-Nourished Toba Women of Formosa, Argentina
The proximate causes of the contraceptive effect of lactation are still a matter of productive debate. This study sought to disentangle the relative impact that intense breast-feeding practices and maternal nutrition have on the regulation of ovarian function in nursing women. A mixed-longitudinal, direct-observational, prospective study was conducted of the return to postpartum fecundity in 113 breast-feeding, well-nourished Toba women. A sub-sa…
Growth rates and life histories in twenty‐two small‐scale societies
This study investigates variation in body growth (cross‐sectional height and weight velocity) among a sample of 22 small‐scale societies. Considerable variation in growth exists among hunter‐gatherers that overlaps heavily with growth trajectories present in groups focusing more on horticulture. Intergroup variation tends to track environmental conditions, with societies under more favorable conditions displaying faster growth and earlier puberty…
Taking the Lab to the Field
The incorporation of biological measures in social science research allows for the development of robust models, with greater explanatory power. By analyzing the underlying proximate causes of fertility and mortality, biodemographers have been able to model demographic patterns more accurately. Recent technological advances are making possible the analysis of biological samples collected using minimally invasive methods. Methods and techniques ar…
Polygyny and women's health in sub-Saharan Africa
Interactions between metabolic and reproductive functions in the resumption of postpartum fecundity
Lactation has long been recognized as a major determinant of interbirth intervals. The temporal pattern of nursing has been proposed as the mechanism behind lactational amenorrhea. We present a new model of the dynamic regulation of lactational amenorrhea that identifies maternal energy availability as the main determinant of ovarian resumption. Variation in the intensity of lactation remains a component of the model as a determinant of the absol…
Body mass index, socio-economic status and socio-behavioral practices among Tz’utujil Maya women
Nutritional status and socioeconomic change among Toba and Wichí populations of the Argentinean Chaco
The Biology of Paternal Care in Human and Nonhuman Primates
Among primates, intense paternal care is manifested in only a few distantly related species, including humans. Thus, neither purely phylogenetic nor socioecological hypotheses can explain its presence or the variability in the expression of paternal behaviors. Traditional theoretical models for the evolution of paternal care can now be reexamined, focusing on male-female interactions as a possible key to understanding parental strategies. At a pr…
Evolutionary perspectives on human diet and nutrition
Coca-Colonization and Hybridization of Diets among the Tz'utujil Maya
Biomedical health professionals express increasing concern that rising consumption of soft drinks and processed foods in Mayan and Latin American eating patterns may lead to detrimental nutritional and health consequences. Scholars debate whether the pervading presence of Coca-Cola and Pepsi in developing countries represents "Coca-Colonization," synonymous with cultural imperialism, or cultural hybridization. Using mixed qualitative and quantita…
Women's health in urban Mali
The Reproductive Transition in an Indigenous Population of Northern Argentina
Latin America has been registering a fast decrease in fertility rates since the mid-twentieth century. This change can be linked to the modernization process these populations have been undergoing. However, research with Latin American indigenous populations, which are undergoing relatively similar lifestyle changes, shows very different trends in fertility. The aim of this study was to analyze fertility patterns in the indigenous Toba community …
Polygyny and Women's Health in Rural Mali
Women's social networks and social power are increasingly seen as important factors modulating their health in sub-Saharan Africa. Polygyny, a common marital structure in many societies, mediates important intra-household relationships by requiring both competition and co-operation among co-wives. Using mixed methods, semi-structured questionnaires were administered to 298 women aged 15–84 living in the Kolondiéba region of rural Mali in 1999, an…
Cambios demográficos en una población rural de la etnia toba del norte de Argentina
Demographic transition in Latin America follows patterns similar to those observed in Europe. However, the demographic effects of modernization vary substantially, especially in indigenous groups. In the 1930s, the indigenous populations of the Gran Chaco region of Argentina began a modernization process that continues today. This study analyzes the demographic changes in a Toba population of northern Argentina. We collected data from population …
The Global and the Local
All over Latin America, indigenous populations are rapidly changing their lifestyle. This work elaborates on the complex experience of indigenous people in transition. Poverty, discrimination, marginalization, and endurance are defining characteristics of their everyday life. Global health programs represent excellent opportunities for addressing these issues. These initiatives, however, are at risk of being short-sighted, ethnocentric, and parad…
Indigenous populations in transition
Metabolic syndrome was highly prevalent in this indigenous community, which places them at an increased risk for cardiovascular disease
Análisis longitudinal del comportamiento reproductivo de una población Toba en transición
Las variaciones demográficas de una población están frecuentemente asociadas a cambios ambientales. Por lo tanto, las particularidades sociales, económicas y culturales de poblaciones indígenas producirían una gran variedad de regímenes demográficos. Si bien en América Latina, en general, y Argentina, en particular, se registró un importante descenso de la fecundidad, las poblaciones indígenas exhiben cambios demográficos que difieren de esta ten…
Health of Indigenous Peoples
Indigenous populations worldwide are experiencing social, cultural, demographic, nutritional, and psychoemotional changes that have a profound impact on health. Regardless of their geographical location or sociopolitical situation, health indicators are always poorer for indigenous populations than for nonindigenous ones. The determinants of this gap are multiple and interactive, and their analysis requires a biocultural framework. Indigenous pop…
Growth patterns among indigenous Qom children of the Argentine Gran Chaco
OBJECTIVES: This study describes and compares the growth strategies of rural (Western) and peri-urban (Eastern) Qom indigenous children from Argentina. METHODS: Height and weight were cross-sectionally assessed in Western (n = 263) and Eastern Qom (n = 512) individuals aged 0-18.9 years. Height-for-age (HAZ), weight-for-age (WAZ), and BMI-for-age (BMIZ) z-scores were calculated with an LMS software. Results were organized into four age categories…
Impact of Universal Health Coverage on Child Growth and Nutrition in Argentina
Objectives. To estimate trends of undernutrition (stunting and underweight) among children younger than 5 years covered by the universal health coverage programs Plan Nacer and Programa Sumar. Methods. From 2005 to 2013, Plan Nacer and Programa Sumar collected high-quality information on birth and visit dates, age (in days), gender, weight (in kg), and height (in cm) for 1.4 million children in 6386 health centers (13 million records) with broad …
The ecology of anemia
OBJECTIVES: The Toba/Qom of Namqom are an indigenous community native to the Gran Chaco region of northern Argentina. Historically seminomadic foragers, the diet of peri-urban community members has rapidly changed from high-protein, high-fiber to hypercaloric, processed. This study aims to understand the impact of this nutritional transition on aspects of women's health by exploring the relationship between prevalence of anemia and current diet c…
Timing of pubertal growth and menarche in indigenous Qom girls of Argentina
Qom participants in this study exhibit relatively fast pubertal development as compared to other Latin American indigenous populations studied previously by others. Genetic and environmental factors influencing body size, diet and/or activity levels should be investigated further in this population
Medicine (26 obras) · Population (23 obras) · Biology (20 obras) · Demography (19 obras) · Sociology (18 obras) · Child Nutrition and Water Access (15 obras) · Environmental health (15 obras) · Geography (14 obras) · Indigenous Health and Education (12 obras) · Indigenous (11 obras)