Five hours or less a night linked to reduced organ function in women
Women who slept five hours or less a night had a 65 percent greater risk of rapid decline in kidney function, compared with women sleeping seven to eight hours a night, the investigators discovered.
“This is concerning because as a general population the amount of sleep we are getting has decreased over the last 20 years,” said lead researcher Dr. Ciaran McMullan, an instructor in medicine.
Americans used to sleep an average of eight hours a night, but now it’s about 6.5 hours and decreasing, he said.
It’s not known whether sleeping longer improves kidney function or reverses damage caused by shortened sleep, he said.
McMullan cautioned that this study can only show that decreased kidney function is associated with less sleep, not that less sleep causes the decline in kidney function. For that, more research is needed, he said.
A connection between disrupted sleep and heart disease has been studied before.
“Diabetes occurs more often in people who sleep less, as does high blood pressure,” he said. “We know that two of the greatest factors that decrease kidney function are diabetes and high blood pressure.”
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SOURCE: WebMD News from HealthDay