Does lack of sleep cause you to gain weight?

Is there a connection between sleep and weight gain or weight laws?

These next two videos will help answer that question.

Population studies have found short sleep duration has been associated with obesity in both children and adults.

Observational studies can never prove cause and effect, though. Maybe the obesity is leading to sleep loss instead of the other way around.

Obesity can cause arthritis, acid reflux, and apnea, all of which can interfere with sleep.

The relationship between obesity and sleep apnea, where your breathing repeatedly stops and starts throughout the night, may be explained by increased tongue fat, fat deposited inside

the base of the tongue that may contribute to obstructing

your airway when you sleep on your back.

The reverse causation explanation of the link between obesity and inadequate sleep is

bolstered by the finding that weight loss interventions can improve daytime sleepiness.

Potential confounding factors also abound.

For example, people with lower socioeconomic status often work less desirable hours,

such as rotating or overnight shifts,

or may live in noisier neighborhoods with poorer air quality, more crime.

The link between inadequate sleep and obesity persists

after controlling for these kinds of factors,

but you can't control for everything.

You can't know for sure if sleep deprivation leads to weight gain until you put it to the test.

Have people pulling all-nighter and they get hungrier and choose larger portions,

randomized people to shave even just a few hours to sleep off every night,

they start eating an average of 677 calories more a day

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