Going to bed hungry can be safe as long as you're eating a well-balanced diet throughout the day. Avoiding late-night snacks or meals can actually help avoid weight gain and an increased BMI. If you're so hungry that you can't go to bed, you can eat foods that are easy to digest and promote sleep.
However, by going to bed on an empty stomach, your blood sugar level may drop, also referred to as hypoglycemia. The condition can be dangerous for people with diabetes and other critical health issues. Even in healthy folks, low blood sugar levels can cause headaches and dizziness and negatively affect sleep.
Going to bed on an empty stomach can leave your stomach empty or wanting to be filled. However, going to bed hungry is considered healthier than eating too close to bedtime. Eating right before bedtime or having a late dinner can lead to increased body mass index (BMI), indigestion or insomnia.
"When it comes to weight loss, going to bed a little bit hungry can help because it keeps hormones like insulin low, and that can help facilitate weight loss," Davis says. But she reiterates that having a big dinner right before bed has the opposite effect.
“If you are hungry, you should eat something, regardless of the time of day,” says Aimee Takamura, registered dietitian and director of wellness and sustainability at Restaurant Associates. “The act of eating late at night does not affect metabolism or lead to many of the adverse effects you may have heard of.
“For optimal sleep it's best not to go to bed too hungry or too full,” says Lisa Moskovitz, R.D. On one hand, falling asleep when all you can think about is the pit in your stomach is difficult AF. But eating too late can wreak havoc on your bod.
What Experts Say About Late-Night Snacking. "If you're hungry at night, you should eat something," says Sarah Pflugradt, M.S., RD, a family nutrition expert. "Eating at night will not slow down your metabolism and if you're smart about snacking, you won't gain weight either.
Data sources: Gastric emptying is slow during sleep but the REM sleep is associated with faster gastric emptying. During the night we have a more regular intestinal motility than during the day.
Turns out, it's not just a matter of boredom or weakened motivation. Your body might actually be pushing you towards the pantry or fridge. A recent study published in the International Journal of Obesity found that participants who felt stressed saw their levels of the hunger hormone ghrelin rise in the evening.
Drink one glass of water 30 minutes before a meal to help digestion. Remember not to drink too soon before or after a meal as the water will dilute the digestive juices. Drink water an hour after the meal to allow the body to absorb the nutrients.
The quickest to digest are processed, sugary junk foods like candy bars. Your body tears through them in a matter of hours, quickly leaving you hungry again.
Weight gain
Your body gains weight when you take in more calories than you burn off. This is the case no matter when you eat. Going to sleep directly after you eat means your body doesn't get a chance to burn off those calories. In fact, eating a big meal and then hitting the couch can be just as harmful.
The triglycerides release fat as carbon dioxide and water atoms during fat metabolism or oxidation. In other words, fat leaves the body as carbon dioxide when you exhale. The fat which becomes water mixes into your circulation until it's lost as urine, tears, sweat and other bodily fluids.
So when exactly should you stop eating? Scientists can't agree on a single set time, but the consensus seems to be within three hours before bedtime. So if you go to bed at 11 p.m., don't eat after 8 p.m. Banishing late night snacks after that time could help alleviate the symptoms of acid reflux disease, too.
It's best to stop eating about three hours before going to bed. That allows plenty of time for your body to digest the last food you ate so it won't disrupt your sleep, but leaves a small enough window before sleep that you won't go to bed feeling hungry.
It can be useful to remember that, just as one day of dieting will not cause a person to lose weight, a day of binge eating will not cause weight gain. Although an episode of overeating can happen to anyone occasionally, some people have a binge eating disorder, which usually requires professional attention.
If you're trying to lose weight, having a nap in the afternoon could help to boost your weight loss. A new study has revealed that people burn more calories while at rest in the afternoon than they do in the morning.
It can help with weight loss
Fasting one or two days a week may be a way for you to consume fewer calories over time. You may find this easier to do than cutting back a certain number of calories every day. The energy restriction from a 24-hour fast may also benefit your metabolism, helping in weight loss.
After you eat, it takes about six to eight hours for food to pass through your stomach and small intestine. Food then enters your large intestine (colon) for further digestion, absorption of water and, finally, elimination of undigested food. It takes about 36 hours for food to move through the entire colon.
Unlike foods, water can be “digested” in as little as 5 minutes. Excess water leaves your body through urination and feces but is also excreted by sweating. Your body uses water for many of its daily processes, and since it passes through your body so quickly, it's important to stay hydrated.
Liquids leave the stomach faster because there is less to break down: Plain water: 10 to 20 minutes. Simple liquids (clear juices, tea, sodas): 20 to 40 minutes. Complex liquids (smoothies, protein shakes, bone broths): 40 to 60 minutes.