Evidence map›Paper›PMID 42538779›Full record

ArticleAmerican journal of biological anthropology2026

Livelihood and Dietary Transitions in Subsistence Populations of Northern Laos: Insights From Carbon and Nitrogen Stable Isotope Analysis.

Ziyang Li, Mihoko Kibe, Yuki Mizuno, Masafumi Saitoh, Kohei Yamazaki, Hiroaki Masuoka, Satoko Kosaka, Kazumi Natsuhara, Kazuhiro Hirayama, Nouhak Inthavong and 4 more

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Article in American journal of biological anthropology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

14 authors.

Ziyang LiDepartment of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.ORCID https://orcid.org/0009-0007-7834-9447
Mihoko KibeDepartment of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.ORCID https://orcid.org/0000-0001-6413-6300
Yuki MizunoDepartment of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.ORCID https://orcid.org/0000-0002-7383-4706
Masafumi SaitohThe University Museum, The University of Tokyo, Tokyo, Japan.ORCID https://orcid.org/0000-0001-6029-7676
Kohei YamazakiThe University Museum, The University of Tokyo, Tokyo, Japan.
Hiroaki MasuokaLaboratory for Symbiotic Microbiome Sciences, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan.ORCID https://orcid.org/0000-0001-5442-7104
Satoko KosakaDepartment of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.ORCID https://orcid.org/0000-0002-2379-2894
Kazumi NatsuharaFaculty of Nursing, Toho University, Tokyo, Japan.
Kazuhiro HirayamaLaboratory of Veterinary Public Health, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.ORCID https://orcid.org/0000-0003-4001-0054
Nouhak InthavongLao Tropical and Public Health Institute, Ministry of Health, Vientiane Capital, Lao PDR.
Sengchanh KounnavongLao Tropical and Public Health Institute, Ministry of Health, Vientiane Capital, Lao PDR.
Minoru YonedaThe University Museum, The University of Tokyo, Tokyo, Japan.ORCID https://orcid.org/0000-0003-0129-8921
Shinsuke TomitaGraduate School of Environmental Studies, Nagoya University, Nagoya, Japan.ORCID https://orcid.org/0000-0001-7677-2232
Masahiro UmezakiDepartment of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.ORCID https://orcid.org/0000-0003-3733-3629

Funding

Japan Science and Technology Agency JPMJSP2108Japan Society for the Promotion of Science JP17H02233Japan Society for the Promotion of Science JP19H03315Japan Society for the Promotion of Science JP20K21443Japan Society for the Promotion of Science JP21H03684Japan Society for the Promotion of Science JP21J12835Japan Society for the Promotion of Science JP25K24680
6 · The paper itself

Abstract

objectivesRural populations in northern Laos have experienced dramatic socioeconomic transformation driven by national policies and regional economic integration, substantially influencing their self-sufficient livelihoods. To investigate how these changes have manifested in local subsistence contexts, we compared hair carbon and nitrogen isotope values between two populations representing swidden- and paddy-farming systems, and assessed how isotopic variations reflect the differences in subsistence practices and degrees of livelihood transformation. By analyzing commonly consumed foodstuffs, we provide the first isotopic dataset of foods from northern Laos and baselines for interpreting human tissue isotope values.

methodsScalp hair and food samples and sociodemographic data were collected from the study villages. In total, 175 hair and 69 food samples were analyzed. Multiple linear regression analyses were used to examine associations with subsistence/economic and dietary variables. Rice-hair isotopic offsets were calculated to qualitatively assess dietary patterns.

resultsHair δ DISCUSSION: The differences in hair isotope values between (sub)populations can be attributed to isotopic variations in rice, the staple food, and to the differences in market participation. Market integration can lead to an increase in hair δ

Indexed as

Carbon IsotopesDietHairNitrogen IsotopesAdultAgricultureFemaleHumansLaosMaleRural PopulationYoung AdultCarbon IsotopesNitrogen IsotopesLaosmarket integrationSoutheast Asiastable isotopessubsistence transition

Identifiers

PMID42538779
PMCPMC13428189

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.