If you do not feel well after the night of bad sleep, you may want to consider dehydration as a cause – not just a lack of sleep – and drink more water, according to a new study published in the journal SLEEP.
The study showed that people who slept just six o'clock at night, and not eight recommended, had a greater likelihood of dehydration.
Dehydration can affect many body systems and functions, including knowledge, mood, physical performance, and others. Long-term or chronic dehydration can lead to more serious problems, such as a higher risk of urinary tract infections and kidney stones.
For the study, researchers at the State University of Pennsylvania noted sleeping conditions affecting the hydration and the risk of dehydration in American and Chinese adults. Participants who reported sleeping six hours had significantly more concentrated urine and 16 to 59 percent had higher odds than they were inadequately hydrated compared with those who slept sleeplessly eight hours regularly.
The cause is related to how the hormone body regulates hydration.
A vasopressin hormone is released that helps regulate the body hydration condition. It is fired throughout the day, as well as during nighttime sleeping, and researchers are focusing on this study.
"Vasopresin is released and faster and later in the sleep cycle," said Dr. Asher Rosinger, assistant professor of health care professor at Penn State. "So if you wake up early, you may miss a window where more hormones are released, causing a body hydration disorder."
Two adult samples were analyzed through the National Nutrition and Nutrition Research Survey and one sample was analyzed through Chinese Kailuan Study. More than 20,000 examinees are included in three samples.
Participants reported on sleep habits and also gave urine samples analyzed by researchers for biomarker hydration.
All data is also observed from cross-sectional or wave cross-sections of the cohort study; therefore the results of the association should not be considered as causative.
Future research should use the same methodology in all places and examine that relationship longitudinally over the course of a week to understand the basic sleep and hydration status, Rosinger said.
In conclusion, researchers suggest that hydration must be at the forefront of their mind the first thing in the morning after a bad night's sleep.
"If you only get six hours a night, it can affect your hydration status," said Rosinger. "This study suggests that if you do not get enough sleep and if you feel bad or tired next day, have some extra water."
Source: Penn State