Science behind sleeping beauty
People who sleep less than six hours a night may be three times more likely to develop incident-impaired fasting glycemia or IFG, a condition that leads to diabetes and heart disease, said researchers from Warwick Medical School and the State University of New York at Buffalo . IFG prevents the body from regulating glucose as efficiently as it should. “We found that short sleep, less than six hours, was associated with a significant, threefold increased likelihood of developing IFG, compared [with] people who got an average of six to eight hours sleep a night,” said lead author Dr. Saverio Stranges. “Previous studies have shown that short sleep duration results in a 28 percent increase in mean levels of the appetite stimulating hormone ghrelin so it can affect feeding behaviors.
Other studies have also shown that a lack of sleep can decrease glucose tolerance and increases the production of cortisol, a hormone produced in response to stress. ”While more research is needed, the study suggests a “very strong correlation between lack of sleep and Type 2 diabetes and heart disease,” he said. The study examined data from 1,455 participants between the ages of 35 and 79. It was published last July 2010 in the online version of the journal Annals of Epidemiology