Metrics details. Dehydration due to insufficient fluid intake IFI is detrimental to health. This cross-sectional study aimed to assess the fluid intake of urban adults in Wuxi, China, and to identify potential risk factors contributing to IFI. Adults were selected from the urban area of Wuxi, China, using a multiple-stage random sampling method. The fluid intake information was obtained with a h self-reported diary over seven consecutive days in both summer and winter of CART is a machine-learning algorithm that portions the data into subsets by threshold.
The results showed that the median P25βP75 values of daily fluid intake of the participants were β mL in summer and β mL in winter. Most of the participants living in the study site had IFI. The fluid consumption varied by gender, age, location, and BMI. The findings could be useful for the implementation and optimization of intervention programs by identifying the individuals who may at greater risk of dehydration.
Peer Review reports. Water is an essential constituent of the human body. It acts not only as a medium involved in reaction processes but also as a carrier transporting nutrients and wastes in and out of cells [ 1 , 2 ].
Adequate fluid intake plays an important role in maintaining water balance, and dehydration may occur when the water balance is broken. It has been reported that dehydration is associated with urological, gastrointestinal, circulatory, and neurological disorders [ 3 , 4 , 5 , 6 ]. Even mild dehydration has an adverse impact on cognitive and performance functions, and elderly people are vulnerable to water deficit [ 6 , 7 ]. Since the human body itself cannot produce enough water to sustain life, we mainly ingest water from plain water, beverages, and food moisture [ 8 ].
Fluid consumption requirements vary between individuals and are influenced by many factors, such as physical activity levels, environmental conditions, and physiological status [ 8 ]. The recommended daily adequate intake for total water intake set by the Food and Nutrition Board of the Institute of Medicine in the United States is 3. The European Food Safety Authority set the threshold of adequate total water intake at 2.
