Plus, nighttime snack ideas to help you optimize for better shut-eye.
Nearly half of all Americans say that they regularly struggle to get enough quality sleep. If you’re one of them, listen up: You might not realize it, but the way you eat has a major impact on how much—and how well—you snooze. And the better rested you are, the easier it is to reach or maintain a healthy weight.
Want proof? When Harvard researchers followed some 60,000 women for nearly two decades, those who regularly slept for fewer than 5 hours per night were 32% more likely to gain 30 or more pounds compared to those who regularly slept for 7 or more hours. When it comes to getting lean, sleep is that important.
Even so, the relationship between sleep and weight is complicated, and experts still have a lot to learn about how the two are connected. What does seem to be clear, though, is that a steady stream of highly processed, inferior food can make it harder to get the quality sleep you need.
Research published in the Journal of Clinical Sleep Medicine found that people who eat diets high in sugar and refined carbs tend to take longer to fall asleep and wake up more frequently during the night. Meanwhile, unhealthy fats could negatively affect your body’s normal sleep-wake cycle, making it harder to doze off at night and wake up refreshed in the morning. In part, that’s because staying up later can seriously impact your ability to make choices that can help you get leaner. When you’re zonked, you simply have less energy for things like shopping for fresh food, preparing clean meals, or even exercising.
To make matters worse, running short on shut-eye makes it harder to resist junky snacks. In fact, one SLEEP study found that sleep deprivation cranks up the pleasurable effects of salty, sugary, and fatty foods. And to top it all off, when you don’t get enough sleep, your body prompts you to eat more calories and burn fewer of them. If that’s not an ugly recipe for spending countless unproductive hours watching TV and eating sugary snacks, nothing is.
There’s more to it, though. Eating clean doesn’t just pull you out of the cycle of eating junk food, sleeping poorly, and then eating more junk food because you’re sleep-deprived. Clean foods actually deliver the nutrients your body needs to sleep better. Research shows that people with adequate levels of vitamin D—found in foods like eggs, mushrooms, fortified milk, and fatty fish—are 33% less likely to experience insomnia than those with insufficient levels of this nutrient. And speaking of fatty fish, some findings suggest that the omega-3 fatty acids found in fish like tuna and salmon can contribute to a better night’s rest. (So far, the research has been conducted on kids, but it’s likely that adults would reap similar benefits.)
Your body relies on potassium (found in foods like sweet potatoes and bananas) and magnesium (found in foods like avocados, nuts, and seeds) to help your muscles relax so you can drift off to dreamland sooner. And it needs the calcium in foods like plain yogurt and leafy greens in order to produce the hormone melatonin, which tells your body when it’s time to feel sleepy. (A few foods, including tart cherries and walnuts, actually contain melatonin.)
With all of that in mind, it might not come as much of a surprise to learn that people who eat diets high in fiber-rich foods, like many of those just mentioned, report getting deeper, more restful sleep than their processed-food-eating counterparts.
Snack for Better Sleep
© Provided by Rodale Inc. Ready to stop counting sheep? Pick an evening snack that helps you drift off to dreamland sooner, like one of these. Enjoy it 2 to 3 hours before going to sleep, since eating too close to bedtime can disrupt your sleep.