It’s long been known in sleep medicine that lack of sleep can cause you to gain weight. But it works the other way around as well: Being overweight gain aggravate obstructive sleep apnea, leading to lack of quality sleep. Here’s an article in the NY Times that summarizes a study showing that even mild degrees of sleep deprivation can cause metabolic changes that promotes weight gain. This article emphasizes sleep deprivation only, but knowing that a huge segment of the population has undiagnosed obstructive sleep apnea, it’s safe to say that lack of quality sleep can also promote weight gain.
Many of you (whether or not you have obstructive sleep apnea) don’t get enough hours of sleep in general. The ideal number of hours is 7 to 8, but everyone has different needs. This is assuming you’re able to breathe normally at night. It’s also been shown that short sleepers (less than 6) or long sleepers (longer than 9) have much higher risk of developing diabetes, depression, heart disease, and even death.
If you’re a short sleeper, I challenge you to sleep one hour longer for the next month. Just by making this one change alone, you’re more likely to lose some weight.