Lack of sleep leads to the 'marijuana munchies'

As if a lack of sleep wasn't bad enough, we have to deal with the knowledge that losing sleep is also likely to make us fat.

Researchers know there is a link between poor sleep and obesity, they just haven't understood why.

A new study published in the journal, Sleep, suggests that it is because a bad night's sleep changes our brain chemistry making us crave more energy-dense snacks such as chips, sweets and biscuits.

In fact, the researchers from the University of Chicago say, a lack of sleep sparks chemical changes similar to those of cannabis to bring a kind of "marijuana munchies" state.

"We know that marijuana activates the endocannabinoid system and causes people to overeat when they are not hungry, and they normally eat yummy sweet and fatty foods," lead researcher Eric Hanlon told the Guardian. "Sleep restriction may cause overeating by acting in the same manner."

To come...

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