Not only can a lack of zzzs slow your metabolism, a 2012 study showed that people who were sleep-deprived had subcutaneous fat cells (the ones right below your skin) that were more insulin resistant, which can lead to weight gain.
Scientists have known for years that sleep deprivation makes you tired and cranky and less able to think clearly. It also can make you fat because it increases levels of a hunger hormone and decreases levels of a fullness hormone, which could lead to overeating and weight gain.
The latest study indicates that not getting enough sleep reduces your fat cells’ ability to respond properly to the hormone insulin, which is crucial for regulating energy storage and use. Over time the disruption could lead to weight gain, type 2 diabetes and other health problems, the researchers say.
