Adults sleeping only six hours per night—compared to the recommended eight—face a significantly higher risk of dehydration, reveals a new Penn State University study. If you're feeling off after a short night's sleep, dehydration might be a factor alongside fatigue. Consider upping your water intake for better recovery.
Researchers examined sleep's impact on hydration in U.S. and Chinese adults. Those averaging six hours of sleep showed more concentrated urine and a 16-59% greater likelihood of underhydration than those getting eight hours regularly. The link traces to the body's hormonal regulation of fluid balance.
Vasopressin, a key hormone, maintains hydration levels by signaling the kidneys. It's active around the clock but peaks during sleep, which was the focus of this research.
Dehydration impairs cognition, mood, physical performance, and more. Chronic cases heighten risks for urinary tract infections and kidney stones.
"Getting only six hours of sleep a night can affect your hydration status," noted the lead researcher. "This study suggests that if you don't get enough sleep and feel bad or tired the next day, drink extra water."
