London: While taking a short nap may be good for your health, extending it to an hour or more significantly increases the risk of developing diabetes, says a new study.
"Excessive daytime sleepiness and taking longer naps were associated with increased risk of Type-2 diabetes, with a short nap not increasing this risk," the study said.
The research by Tomohide Yamada from University of Tokyo in Japan analysed studies published till November 2014 on the association between daytime sleepiness, nap, and diabetes.
In contrast, a shorter nap (60 mins or less per day) did not increase the risk of diabetes.
"Daytime napping might be a consequence of night-time sleep disturbance such as obstructive sleep aponea (OSA),A" the study noted.
"A short nap finishes before the onset of deep slow-wave sleep. Entering deep slow-wave sleep and then failing to complete the normal sleep cycle can result in a phenomenon known as sleep inertia, in which a person feels groggy, disoriented, and even sleepier than before napping,A" Yamada said.
The findings were presented at the annual meeting of the European Association for the Study of Diabetes (EASD) in Stockholm, Sweden.
"Excessive daytime sleepiness and taking longer naps were associated with increased risk of Type-2 diabetes, with a short nap not increasing this risk," the study said.
The research by Tomohide Yamada from University of Tokyo in Japan analysed studies published till November 2014 on the association between daytime sleepiness, nap, and diabetes.
In contrast, a shorter nap (60 mins or less per day) did not increase the risk of diabetes.
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"Daytime napping might be a consequence of night-time sleep disturbance such as obstructive sleep aponea (OSA),A" the study noted.
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"A short nap finishes before the onset of deep slow-wave sleep. Entering deep slow-wave sleep and then failing to complete the normal sleep cycle can result in a phenomenon known as sleep inertia, in which a person feels groggy, disoriented, and even sleepier than before napping,A" Yamada said.
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The findings were presented at the annual meeting of the European Association for the Study of Diabetes (EASD) in Stockholm, Sweden.
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