Adults sleeping only six hours per night, instead of eight, may have a higher chance of suffering from dehydration, according to a study.
The research emphasized that those who did not feel well after a night of sleep probably felt dehydrated and might want to consider taking more water.
Dehydration negatively affects 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 increased risk of urinary tract infections and kidney stones.
"If you only have six hours of sleep at night, it can affect your hydration status. This study suggests that if you do not get enough sleep, and the next day you feel bad or tired, drink extra water," said Asher Rosinger, Assistant Professor at the University of Pennsylvania in the United States.
For the study, published in the SLEEP magazine, the team involved more than 20,000 adults and studied how sleep affects their hydration status and the risk of dehydration.
Participants were questioned about sleep habits, and samples of urine were collected.
The results showed that adults who reported sleeping six hours had significantly more concentrated urine and 16 to 59 percent more likely to be inadequately hydrated than adults who slept eight hours a day at night.
The cause was related to the way the body's vasopressin – the hormone – is released to regulate the status of hydrate throughout the day as well as during nighttime sleep.
All data is observational, so the results of the association should not be considered as causative, researchers said.