Sleep and Dehydration: What's the Link?


Adults who sleep just six hours a night may have a higher risk of dehydration than those who get eight hours of sleep, say researchers from Pennsylvania State University (Penn State), who analyzed data on more than 20,000 people from the National Health and Nutrition Examination Survey and the Chinese Kailuan Study to come to this conclusion. Dehydration, say the researchers, can contribute to feeling poorly after a night of too little sleep.

Study subjects who were surveyed about their sleep habits provided urine samples that were examined for biomarkers of hydration. The researchers found that participants who slept six hours at night had more concentrated urine and up to a 59 percent higher risk of being dehydrated than those who regularly slept eight hours.

The connection between sleep and hydration is a hormone called vasopressin, which is released during the day and at night during sleep to help regulate fluid levels in the body. Dehydration can affect cognition, mood, and physical performance and may lead to an increased risk for kidney stones and urinary tract infections.

Sourced from: Sleep