Changes in the body's water turnover associated with environmental and lifestyle factors

As the Earth's climate and human population change, the water demand for human consumption may become more difficult to manage
.
The researchers used isotope labeling techniques to track water intake and loss in individuals in a variety of environmental and living conditions
.
Total water input and output vary based on many factors, including body size, physical activity, air temperature, humidity, and altitude
.
Based on these parameters, the authors derive formulas
for predicting water use.

Water is essential for survival, yet one in three people worldwide (2.
2 billion people) does not have access to safe drinking water
.
Water intake requirements largely reflect the turnover rate (WT)
of the water your body uses on a daily basis.
We used isotope tracking technology to investigate the determinants of weight (2H) method in 5604 people aged 8 days to 96 years from ²³ countries
.
Age, size, and composition were significantly correlated with body weight, as were physical activity, exercise status, pregnancy, socioeconomic status, and environmental characteristics (latitude, altitude, air temperature, and humidity
).
People living in countries with a low Human Development Index (HDI) have a higher weight
than people in countries with a high HDI.
On the basis of this extensive dataset, we provide formulas
for predicting human weight in relation to anthropometric, economic, and environmental factors.