Read by QxMD icon Read


Margie Steffens, Lisa Jamieson, Kostas Kapellas
Discrimination is a very real facet of Australian Aboriginal and Torres Strait Islander (ATSI) life. Paradies has detailed the strong links between racism and chronic stress and the influence this may have on general health, confounding the pre-supposed notion that ATSI populations are more genetically predisposed to chronic diseases. For example a genetic predisposition promoting central adipose storage in populations with recent (in evolutionary terms) changes to hunter-gatherer dietary patterns is thought to contribute to the higher rates of diabetes seen in ATSI and other Native populations...
2016: Journal of Health Care for the Poor and Underserved
Monica N Ramsey, Lisa A Maher, Danielle A Macdonald, Arlene Rosen
'Neolithization' pathway refers to the development of adaptations that characterized subsequent Neolithic life, sedentary occupations, and agriculture. In the Levant, the origins of these human behaviors are widely argued to have emerged during the Early Epipaleolithic (ca. 23 ka cal BP). Consequently, there has been a pre-occupation with identifying and modeling the dietary shift to cereal and grains during this period, which is considered to have been a key development that facilitated increasing sedentism and, eventually, agriculture...
2016: PloS One
David A Raichlen, Herman Pontzer, Jacob A Harris, Audax Z P Mabulla, Frank W Marlowe, J Josh Snodgrass, Geeta Eick, J Colette Berbesque, Amelia Sancilio, Brian M Wood
OBJECTIVES: Time spent in moderate-to-vigorous physical activity (MVPA) is a strong predictor of cardiovascular health, yet few humans living in industrialized societies meet current recommendations (150 min/week). Researchers have long suggested that human physiological requirements for aerobic exercise reflect an evolutionary shift to a hunting and gathering foraging strategy, and a recent transition to more sedentary lifestyles likely represents a mismatch with our past in terms of physical activity...
October 9, 2016: American Journal of Human Biology: the Official Journal of the Human Biology Council
Gustavo G Politis, María A Gutiérrez, Daniel J Rafuse, Adriana Blasi
The Arroyo Seco 2 site contains a rich archaeological record, exceptional for South America, to explain the expansion of Homo sapiens into the Americas and their interaction with extinct Pleistocene mammals. The following paper provides a detailed overview of material remains found in the earliest cultural episodes at this multi-component site, dated between ca. 12,170 14C yrs B.P. (ca. 14,064 cal yrs B.P.) and 11,180 14C yrs B.P. (ca. 13,068 cal yrs B.P.). Evidence of early occupations includes the presence of lithic tools, a concentration of Pleistocene species remains, human-induced fractured animal bones, and a selection of skeletal parts of extinct fauna...
2016: PloS One
Patricia M Lambert, Martin H Welker
OBJECTIVES: Bioarchaeological research has documented a general decline in health with the transition from foraging to farming, primarily with respect to changing patterns of morbidity. Less is known about changes in injury risk, an aspect of health more obviously tied to particular landscapes and behaviors associated with different subsistence regimes. The purpose of this research is to evaluate several hypotheses emerging from the ideal free distribution model (Fretwell & Lucas, ) that predict injury risk based on subsistence-specific practices and land use patterns...
September 27, 2016: American Journal of Physical Anthropology
Michael D Gurven, Benjamin C Trumble, Jonathan Stieglitz, Aaron D Blackwell, David E Michalik, Caleb E Finch, Hillard S Kaplan
Heart disease and type 2 diabetes are commonly believed to be rare among contemporary subsistence-level human populations, and by extension prehistoric populations. Although some caveats remain, evidence shows these diseases to be unusual among well-studied hunter-gatherers and other subsistence populations with minimal access to healthcare. Here we expand on a relatively new proposal for why these and other populations may not show major signs of these diseases. Chronic infections, especially helminths, may offer protection against heart disease and diabetes through direct and indirect pathways...
September 25, 2016: Evolution, Medicine, and Public Health
Carina M Schlebusch, Frans Prins, Marlize Lombard, Mattias Jakobsson, Himla Soodyall
Southern Africa was likely exclusively inhabited by San hunter-gatherers before ~2000 years ago. Around that time, East African groups assimilated with local San groups and gave rise to the Khoekhoe herders. Subsequently, Bantu-speaking farmers, arriving from the north (~1800 years ago), assimilated and displaced San and Khoekhoe groups, a process that intensified with the arrival of European colonists ~350 years ago. In contrast to the western parts of southern Africa, where several Khoe-San groups still live today, the eastern parts are largely populated by Bantu speakers and individuals of non-African descent...
December 2016: Human Genetics
Aurore Val, Paloma de la Peña, Lyn Wadley
Here, we present direct taphonomic evidence for the exploitation of birds by hunter-gatherers in the Middle Stone Age of South Africa as far as ∼77 ka. The bird assemblage from Sibudu Cave, KwaZulu-Natal, was analysed for bone surface modifications. Cut-marks associated with skinning, defleshing, and disarticulation, perforations on distal humeri produced during disarticulation of the forewing, peeling, and human tooth marks were observed on bird bones (i.e., mostly pigeons, doves, Galliformes, waders, and raptors) recovered from pre-Still Bay, Still Bay, Howiesons Poort, and post-Howiesons Poort techno-complexes...
October 2016: Journal of Human Evolution
Charles N Rotimi, Fasil Tekola-Ayele, Jennifer L Baker, Daniel Shriner
The trans-Atlantic slave trade brought millions of Africans to the New World. Advances in genomics are providing novel insights into the history and health of Africans and the diasporan populations. Recent examples reviewed here include the unraveling of substantial hunter-gatherer and 'Eurasian' admixtures across sub-Saharan Africa, expanding our understanding of ancestral African genetics; the global ubiquity of mixed ancestry; the revealing of African ancestry in Latin Americans that likely derived from the slave trade; and understanding of the ancestral backgrounds of APOL1 and LPL found to influence kidney disease and lipid levels, respectively, providing specific insights into disease etiology and health disparities...
September 16, 2016: Current Opinion in Genetics & Development
Silvia Turroni, Jessica Fiori, Simone Rampelli, Stephanie L Schnorr, Clarissa Consolandi, Monica Barone, Elena Biagi, Flaminia Fanelli, Marco Mezzullo, Alyssa N Crittenden, Amanda G Henry, Patrizia Brigidi, Marco Candela
The recent characterization of the gut microbiome of traditional rural and foraging societies allowed us to appreciate the essential co-adaptive role of the microbiome in complementing our physiology, opening up significant questions on how the microbiota changes that have occurred in industrialized urban populations may have altered the microbiota-host co-metabolic network, contributing to the growing list of Western diseases. Here, we applied a targeted metabolomics approach to profile the fecal metabolome of the Hadza of Tanzania, one of the world's few remaining foraging populations, and compared them to the profiles of urban living Italians, as representative of people in the post-industrialized West...
2016: Scientific Reports
Gul Deniz Salali, Nikhil Chaudhary, James Thompson, Olwen Megan Grace, Xander M van der Burgt, Mark Dyble, Abigail E Page, Daniel Smith, Jerome Lewis, Ruth Mace, Lucio Vinicius, Andrea Bamberg Migliano
Humans possess the unique ability for cumulative culture [1, 2]. It has been argued that hunter-gatherer's complex social structure [3-9] has facilitated the evolution of cumulative culture by allowing information exchange among large pools of individuals [10-13]. However, empirical evidence for the interaction between social structure and cultural transmission is scant [14]. Here we examine the reported co-occurrence of plant uses between individuals in dyads (which we define as their "shared knowledge" of plant uses) in BaYaka Pygmies from Congo...
September 26, 2016: Current Biology: CB
Paul Zaslansky, John D Currey, Claudia Fleck
The main mass of material found in teeth is dentine, a bone-like tissue, riddled with micron-sized tubules and devoid of living cells. It provides support to the outer wear-resistant layer of enamel, and exhibits toughening mechanisms which contribute to crack resistance. And yet unlike most bone tissues, dentine does not remodel and consequently any accumulated damage does not 'self repair'. Because damage containment followed by tissue replacement is a prime reason for the crack-arresting microstructures found in most bones, the occurrence of toughening mechanisms without the biological capability to repair is puzzling...
2016: Bioinspiration & Biomimetics
Meghan C L Howey, Franklin B Sullivan, Jason Tallant, Robert Vande Kopple, Michael W Palace
Forested settings present challenges for understanding the full extent of past human landscape modifications. Field-based archaeological reconnaissance in forests is low-efficiency and most remote sensing techniques are of limited utility, and together, this means many past sites and features in forests are unknown. Archaeologists have increasingly used light detection and ranging (lidar), a remote sensing tool that uses pulses of light to measure reflecting surfaces at high spatial resolution, to address these limitations...
2016: PloS One
Kyungcheol Choy, Ben A Potter, Holly J McKinney, Joshua D Reuther, Shiway W Wang, Matthew J Wooller
Current approaches to reconstruct subsistence and dietary trends in ancient hunter-gatherer societies include stable isotope analyses, but these have focused on human remains, cooking pottery, and food residues, which are relatively rare in the archaeological record. In contrast, short-term hearths are more ubiquitous worldwide, and these features can provide valuable evidence for ancient subsistence practices, particularly when faunal remains are not preserved. To test the suitability of hearths for this purpose, we conducted multiple chemical analyses: stable carbon and nitrogen isotope analyses of total organic matter (expressed as δ(13)C and δ(15)N values) and compound-specific carbon isotope analyses of individual fatty acids (δ(13)C16:0 and δ(13)C18:0) from 17 well-preserved hearths present in three occupations dating between ∼13,200-11,500 calibrated years B...
August 30, 2016: Proceedings of the National Academy of Sciences of the United States of America
Bernard J Crespi
Human hunter-gatherers share a suite of traits with social insects, which demonstrates convergent social evolution of these taxa prior to agriculture. Humans differ from social insects in that their divisions of labor are more competitive than cooperative. Resulting higher within-group competition in humans has been alleviated by religion and culturally imposed monogamy, both of which also find parallels among social insects.
January 2016: Behavioral and Brain Sciences
Andrew Whiten, David Erdal
UNLABELLED: We raise and discuss two issues for clarification. First, over what timescale is cultural group selection proposed to have been active? Unprecedented cooperation is inferred to have arisen in hunter-gather life well before the recent period on which Richerson et al. FOCUS: Second, what is the unit of selection? Groups (of human individuals)? Or cultural entities along the lines of "meme-complexes"?
January 2016: Behavioral and Brain Sciences
Alla Yaroshevich, Ofer Bar-Yosef, Elisabeta Boaretto, Valentina Caracuta, Noam Greenbaum, Naomi Porat, Joel Roskin
Three engraved limestone plaquettes from the recently excavated Epipaleolithic open-air site Ein Qashish South in the Jezreel Valley, Israel comprise unique evidence for symbolic behavior of Late Pleistocene foragers in the Levant. The engravings, uncovered in Kebaran and Geometric Kebaran deposits (ca. 23ka and ca. 16.5ka BP), include the image of a bird-the first figurative representation known so far from a pre-Natufian Epipaleolithic-along with geometric motifs such as chevrons, crosshatchings and ladders...
2016: PloS One
Burton Simon, Michael Pilosov
Group-level events, like fission and extinction, catalyze the evolution of cooperation in group-structured populations by creating new paths from uncooperative population states to more cooperative states. Group-level events allow cooperation to thrive under unfavorable conditions such as low intra-group assortment and moderate rates of migration, and can greatly speed up the evolution of cooperation when conditions are more favorable. The time-dependent effects of fission and extinction events are studied and illustrated here using a PDE model of a group-structured population based loosely on populations of hunter-gatherer tribes...
August 18, 2016: Journal of Theoretical Biology
D Lemogoum, Y Hako, C Bika Lele, C Okalla, J Dissongo, J M'buyamba-Kabangu, J Degaute, M Leeman, P van de Borne
OBJECTIVE: To assess the association between 24 hours urinary sodium and potassium excretion with blood pressure (BP) in rural and urban pygmies and Bantus of southern Cameroon. DESIGN AND METHOD: In this cross-sectional survey, we compared 100 traditional pygmies (TP) living in equatorial forest (Lolodorf) and their 100 neighbors traditional Bantus (TB) living in Bidjouka village, to 100 contemporary pygmies (CP) and 100 contemporary Bantus (CB) both living in urban environment in Kribi city...
September 2016: Journal of Hypertension
Manon Galland, Denis P Van Gerven, Noreen Von Cramon-Taubadel, Ron Pinhasi
The transition to agriculture was a key event in human history. The extent to which this transition is associated with biological changes in different world regions remains debated. Cultural and osteological records in Lower Nubia throughout the Holocene have been interpreted as a result of in situ differentiation or alternatively as migratory events and possible admixture with surrounding populations. Here we investigated the patterns of craniofacial and mandibular variation from Mesolithic hunting-gathering to late farming, a period spanning 11,000 years...
2016: Scientific Reports
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"