ArticleAmerican journal of human biology : the official journal of the Human Biology Council2021
Hydration in relation to water insecurity, heat index, and lactation status in two small-scale populations in hot-humid and hot-arid environments.
Article in American journal of human biology : the official journal of the Human Biology Council, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.
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31 citing papers in PubMed, 1 synthesis or guideline pooled it, 45 citations in OpenAlex.
- Thermal indices for assessing the impact of outdoor thermal environments on human health: a systematic review of epidemiological studies.International journal of biometeorology · 2025Pooled it
- Household Water and Food Insecurity Are Positively Associated with Poor Mental and Physical Health among Adults Living with HIV in Western Kenya.The Journal of nutrition · 2021Trial
- Historic drought in northern Kenya shifts diet and mobility away from traditional pastoralism as resource security and nutrition falter.Global environmental change : human and policy dimensions · 2026Article
- Intersection of Climate and Environmental Change and Priority Health Outcomes Across the Life Course: Working Group 1 Report from the "Agriculture and Diet: Value Added for Nutrition, Translation, and Adaptation in a Global Ecology" (ADVANTAGE) Project.Advances in nutrition (Bethesda, Md.) · 2026Review
- Birth Weight in the Daasanach Community of Northern Kenya and the Effect of Multiparity.American journal of human biology : the official journal of the Human Biology Council · 2026Article
- Increased Vulnerability to Dehydration Due to Heat Stress and Drought Across Reproductive States for Pastoralist Women in Northern Kenya.American journal of human biology : the official journal of the Human Biology Council · 2026Article
- Water Insecurity Is Associated with Sugar-Sweetened Beverage Consumption in a Small-Scale Population in Lowland Bolivia Experiencing Lifestyle Changes.Journal of the Academy of Nutrition and Dietetics · 2026Article
- Water and nutrition in a rapidly changing world: Introduction to the special issue.Journal of the Academy of Nutrition and Dietetics · 2026Article
- Interacting Water Insecurity and Food Insecurity: Recent Advances in Theory and Application.American journal of human biology : the official journal of the Human Biology Council · 2025Article
- Food and Water Insecurity and Functional Disability in Adults.JAMA network open · 2025Article
- Chronic Stress and Severe Water Insecurity During the Historic 2022 Drought in Northern Kenya Were Associated With Inflammation Among Daasanach Seminomadic Pastoralists.American journal of human biology : the official journal of the Human Biology Council · 2025Article
- High water turnover, hydration status, and heat stress among Daasanach pastoralists in a hot, semi-arid climate.Evolution, medicine, and public health · 2025Article
- Physical Activity and Pregnancy Norms Among Daasanach Semi-Nomadic Pastoralist Women in Northern Kenya.American journal of human biology : the official journal of the Human Biology Council · 2025Article
- Water insecurity may exacerbate food insecurity even in water-rich environments: Evidence from the Bolivian Amazon.The Science of the total environment · 2024Article
- Mobility ideation due to water problems during historic 2022 drought associated with livestock wealth, water and food insecurity, and fingernail cortisol concentration in northern Kenya.Social science & medicine (1982) · 2024Article
- Total daily energy expenditure and elevated water turnover in a small-scale semi-nomadic pastoralist society from Northern Kenya.Annals of human biology · 2024Article
- Coping with extreme heat: current exposure and implications for the future.Evolution, medicine, and public health · 2024Review
- Early childhood growth in Daasanach pastoralists of Northern Kenya: Distinct patterns of faltering in linear growth and weight gain.American journal of human biology : the official journal of the Human Biology Council · 2023Article
- When the flood passes, does health return? A short panel examining water and food insecurity, nutrition, and disease after an extreme flood in lowland Bolivia.American journal of human biology : the official journal of the Human Biology Council · 2023Article
- The effects of lifestyle change on indicators of cardiometabolic health in semi-nomadic pastoralists.Evolution, medicine, and public health · 2023Article
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Authors and funding
11 authors at 7 institutions in 4 countries.
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Abstract
objectivesThis study compared the prevalence of concentrated urine (urine specific gravity ≥1.021), an indicator of hypohydration, across Tsimane' hunter-forager-horticulturalists living in hot-humid lowland Bolivia and Daasanach agropastoralists living in hot-arid Northern Kenya. It tested the hypotheses that household water and food insecurity would be associated with higher odds of hypohydration.
methodsThis study collected spot urine samples and corresponding weather data along with data on household water and food insecurity, demographics, and health characteristics among 266 Tsimane' households (N = 224 men, 235 women, 219 children) and 136 Daasanach households (N = 107 men, 120 women, 102 children).
resultsThe prevalence of hypohydration among Tsimane' men (50.0%) and women (54.0%) was substantially higher (P < .001) than for Daasanach men (15.9%) and women (17.5%); the prevalence of hypohydration among Tsimane' (37.0%) and Daasanach (31.4%) children was not significantly different (P = .33). Multiple logistic regression models suggested positive but not statistically significant trends between household water insecurity and odds of hypohydration within populations, yet some significant joint effects of water and food insecurity were observed. Heat index (2°C) was associated with a 23% (95% confidence interval [CI]: 1.09-1.40, P = .001), 34% (95% CI: 1.18-1.53, P < .0005), and 23% (95% CI: 1.04-1.44, P = .01) higher odds of hypohydration among Tsimane' men, women, and children, respectively, and a 48% (95% CI: 1.02-2.15, P = .04) increase in the odds among Daasanach women. Lactation status was also associated with hypohydration among Tsimane' women (odds ratio = 3.35, 95% CI: 1.62-6.95, P = .001).
conclusionThese results suggest that heat stress and reproductive status may have a greater impact on hydration status than water insecurity across diverse ecological contexts.
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