{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T05:45:28Z","timestamp":1785735928946,"version":"3.56.0"},"reference-count":53,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T00:00:00Z","timestamp":1782777600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T00:00:00Z","timestamp":1782777600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["1924322"],"award-info":[{"award-number":["1924322"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["1852406"],"award-info":[{"award-number":["1852406"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000066","name":"National Institute of Environmental Health Sciences","doi-asserted-by":"publisher","award":["R01ES035402"],"award-info":[{"award-number":["R01ES035402"]}],"id":[{"id":"10.13039\/100000066","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100009633","name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","doi-asserted-by":"publisher","award":["P2CHD041025"],"award-info":[{"award-number":["P2CHD041025"]}],"id":[{"id":"10.13039\/100009633","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["American J Hum Biol"],"published-print":{"date-parts":[[2026,7]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>Extreme weather events, like drought and heat stress, make it harder to meet water needs in water\u2010insecure settings, particularly vulnerable groups. This study examines how short\u2010term (heat stress) and long\u2010term (drought) water stress affects hydration status across reproductive states (pregnant, lactating, compared to non\u2010pregnant\/non\u2010lactating) for Daasanach semi\u2010nomadic pastoralist women in northern Kenya.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Drawing on unbalanced panel data, we analyzed 565 observations from 303 women (aged \u2265\u200916\u2009years) in 2019\u20132024. Hydration was assessed via urine specific gravity (USG) with dehydration classified as USG &gt;\u20091.020. Environmental heat stress was measured by ambient temperature and humidity, with sensitivity analyses using wet bulb globe temperature.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Mixed effect logistic regression models indicated ambient temperature and humidity were significantly associated with greater odds of dehydration across all women. Holding heat stress constant, lactating but not pregnant women had higher odds of dehydration than non\u2010pregnant\/non\u2010lactating women. A significant interaction between heat stress and reproductive status indicated that the probability of dehydration increased fastest for pregnant women as temperatures rose. Holding heat constant, dehydration probability increased during drought years compared to pre\u2010 and post\u2010drought and was most pronounced among lactating women.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Ambient heat stress increases dehydration risk among Daasanach women with effects compounded in pregnancy, though overall lactation was the period of greatest vulnerability to dehydration. Dehydration probability peaked during the drought illustrating how long\u2010term periods of water scarcity also challenge water needs. Heat stress and droughts exacerbate maternal and infant health risks; thus, targeted hydration and cooling interventions are needed.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/ajhb.70303","type":"journal-article","created":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T06:32:41Z","timestamp":1782887561000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Increased Vulnerability to Dehydration Due to Heat Stress and Drought Across Reproductive States for Pastoralist Women in Northern Kenya"],"prefix":"10.1002","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-5663-3206","authenticated-orcid":false,"given":"Suha","family":"Arshad","sequence":"first","affiliation":[{"name":"Department of Anthropology Vanderbilt University  Nashville Tennessee USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kedir T.","family":"Roba","sequence":"additional","affiliation":[{"name":"Department of Biobehavioral Health Pennsylvania State University  University Park Pennsylvania USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Natalie","family":"Meriwether","sequence":"additional","affiliation":[{"name":"Department of Biobehavioral Health Pennsylvania State University  University Park Pennsylvania USA"},{"name":"Hubert Department of Global Health Rollins School of Public Health  Atlanta Georgia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hannah","family":"Jacobson","sequence":"additional","affiliation":[{"name":"Department of Anthropology Northwestern University  Evanston Illinois USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1110-4310","authenticated-orcid":false,"given":"Amanda","family":"McGrosky","sequence":"additional","affiliation":[{"name":"Department of Biology Elon University  Elon North 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USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David R.","family":"Braun","sequence":"additional","affiliation":[{"name":"Center for the Advanced Study of Human Paleobiology The George Washington University  Washington DC USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rosemary","family":"Nzunza","sequence":"additional","affiliation":[{"name":"Center for Virus Research Kenya Medical Research Institute (KEMRI)  Nairobi Kenya"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emmanuel","family":"Ndiema","sequence":"additional","affiliation":[{"name":"Department of Earth Sciences National Museums of Kenya  Nairobi Kenya"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Herman","family":"Pontzer","sequence":"additional","affiliation":[{"name":"Department of Biology Elon University  Elon North Carolina USA"},{"name":"Department of Evolutionary Anthropology Duke University  Durham North Carolina 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