Details about the study

The subjects of the study were 8 male dogs before and after diet-induced obesity. They were deprived of sleep for a full night, after which, the insulin sensitivity was measured via an IV glucose tolerance test and compared to results of those dogs that slept normally. The subjects were also fed a high-fat diet for 6 months, before being tested again. The outcome was as follows:

• Sleep deprivation of a single night lessened insulin sensitivity by 33%.


• 6 months of diet with high fat content reduce it by 21%.


• If the high-fat diet has already caused the damage via insensitivity, an extra night of sleep deprivation didn’t aggravate it anymore.

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