Heat and hydration status: Predictors of repeated measures of urine specific gravity among Tsimane’ adults in the Bolivian Amazon

Abstract

These findings suggest that hotter temperatures coupled with lifestyle transitions may create conditions that increase vulnerability to dehydration among rural populations through landscape modifications and diet changes.

Fluid intake of children, adolescents and adults in Indonesia: results of the 2016 Liq.In7 national cross-sectional survey

“…However, it is important to note that while the majority of participants in the present study met, or exceed the recommended AIs, those not drinking enough to meet these recommendations would need to drink between 351 and 531 mL/day (at least one to two servings) depending on age. Given the association between ambient temperature and urine specific gravity [37], it is vital that more research is conducted to further elucidate the effect of climate, including ambient temperature and altitude on TFI and the risk of dehydration, especially in those not meeting AI recommendations.…”

Advancing methods for research on household water insecurity: Studying entitlements and capabilities, socio-cultural dynamics, and political processes, institutions and governance

“…Direct observation of water collection and usage is perhaps the most realistic and reliable measure (White et al, 1972), but remains extremely time intensive on a large scale and may be biased if observation leads to behavior change. On an individual level, urine specific gravity is a reliable, precise measure to assess water intake, but may be difficult to implement in some research contexts (Rosinger 2015a). The volume of household water usage can also be estimated though observational surveys that incorporate container measurements and household reporting of water collection frequency and allocation (Pearson 2016, Geere et al 2010, Majuru et al 2012, Wutich 2009).…”

“…Following Netting et al (1984: xxii), we define a household as “a fundamental social unit…for pooling and sharing of resources.” Yet, households vary in their capacity to access water based on factors such as family size, acute/chronic illness and disability, and age composition (Geere et al 2010). Further, the negative physiological impacts of water insecurity, such as dehydration, might be felt more acutely by some demographic subgroups, or by some individuals within the household (Rosinger 2015a, 2015b, Wutich and Brewis 2014). Factors operating at other scales of analysis shape household water insecurity as well.…”

Metabolic and Kidney Diseases in the Setting of Climate Change, Water Shortage, and Survival Factors

“…66,67 The Tsimane Indians of the Amazon show evidence of dehydration in 40% of subjects, especially on days with high temperatures and strenuous physical activity, despite mean water intake of 6 L daily. 68 Chronic recurrent dehydration is also common in sugar cane workers in Central America who work under hot and humid conditions. [69][70][71] After dehydration occurs, mental and physical performance worsen, 65,72,73 total sweat volume decreases, 74 and relative water content of sweat decreases (reflected by higher sodium concentration).…”