Best late-night snacks that won’t cost you sleep

Key takeaways

• No snack has been proven to improve sleep. The trials behind the popular picks are small, and several were funded or supported by industry groups that sell the food.

• Small and light is the safe default. One study of 14 college athletes found that a pre-sleep intake averaging about 330 calories wasn’t tied to worse sleep.

• Timing is the main variable if you get heartburn. The American College of Gastroenterology suggests skipping meals within two to three hours of bed, and the NHS says three to four.

• Skip the heavy stuff. Big portions, rich or spicy food, sweets, caffeine, and alcohol are the usual troublemakers.

• Waking up hungry on a regular basis is worth a doctor’s visit. It can signal low blood sugar, night eating syndrome, or sleep-related eating disorder.

How we ranked these snacks

Most “best snacks for sleep” lists repeat the same foods. We started with the ones that come up most often and looked for studies that measured sleep. We kept foods that had at least one such study. We also kept oats and cottage cheese or yogurt, which have no direct sleep trial but come up in research on fiber and bedtime protein.

The order below is a judgment call that weighs how practical each snack is late at night as well as trial size, the sleep measures used, and who paid. Every snack here has thin evidence, so each entry says how big the study was, who paid for it, and what it measured. Doses are the trial amounts.

1. Kiwifruit - Best for a light fruit snack

A 2011 study in Taiwan gave 24 adults with sleep problems two kiwifruit an hour before bed for four weeks. On their own sleep diaries, they reported falling asleep 35.4% faster, spending 28.9% less time awake after falling asleep, and sleeping 13.4% longer. A wrist sensor confirmed about 17% more total sleep time but showed no significant change in how fast they fell asleep or how long they were awake at night.

The study had no control group, so expectation could explain some of the gain. It was also supported by Zespri, a kiwifruit marketer, and 22 of the 24 people were women. It’s an early signal, and we found no larger trial that repeated it.

What works: A low-calorie snack that’s easy to portion, with gains reported on sleep diaries.

What doesn’t: One small, industry-supported study with no comparison group, and a wrist sensor only partly backed up the diary results.

Best for: Anyone who wants something sweet and light.

2. Tart cherry - Best for people who already like cherry juice

Tart cherry has been tested more often than most of the others here, and the results are mixed. In a 2010 trial, 15 adults over 65 with chronic insomnia drank tart cherry juice for two weeks and a placebo drink for two weeks. They spent fewer minutes awake after falling asleep on the juice, but nothing else changed, including how long it took to fall asleep and total sleep time. The juice maker funded the whole study.

Newer trials were less encouraging. A 2024 trial of 34 adults with sleep problems found no effect from cherry powder capsules on any sleep measure, and it was funded by the Cherry Marketing Institute. A separate trial of 44 healthy adults, using juice or capsules for 30 days, also found no difference in sleep between groups.

What works: Cherry juice and capsules have been tested several times, so there’s more data than for most foods here.

What doesn’t: Mixed results and grower funding. Juice also carries sugar, which adds up late in the evening.

Best for: Cherry fans who want to try it for a couple of weeks and see.

3. Walnuts - Best for pairing with dinner

A 2025 trial of 76 young adults compared 40 g of walnuts eaten with dinner for eight weeks against no nuts. People who ate walnuts reported falling asleep faster and better overall sleep quality. The participants knew which group they were in, which leaves room for expectation to play a part.

That makes it a dinner habit more than a late-night snack. A 2026 review found only four randomized trials on nuts and sleep and described large differences between them.

What works: The trial was bigger than most in this list.

What doesn’t: The study was open-label, and the nuts came with dinner.

Best for: People who want something other than fruit with their evening meal.

4. Almonds - Best for a longer-term habit

The largest trial on this list followed 175 adults aged 21 to 55 with poor sleep. Half ate 60 g of almonds a day (about 50 almonds) as a mid-morning and an evening snack for five months, and half ate a savory snack with the same calories. The almond group scored better on a sleep questionnaire (3.94 versus 4.79, where lower is better) and reported falling asleep faster, 18.5 versus 26.3 minutes.

Most of the lab-measured results, which came from a single night in a sleep lab, weren’t significant. The Almond Board of California supported the trial and supplied the nuts, and one author disclosed founding a company, FamPhy. The authors reported no other conflicts. The trial was open-label, and the 175 are the people who finished. At 60 g, it is also a big portion for a late snack.

What works: A larger and longer trial than any other here, with a comparison snack matched for calories.

What doesn’t: Industry funding and small gains on lab measures.

Best for: People who’d rather build a daily nut habit than eat one at midnight.

5. Banana - Best for something you already have at home

A 2024 study put 21 adults with insomnia into three groups of seven. One group ate a banana at bedtime for six weeks, one drank 200 mL of whole milk, and one did neither. Participants chose their own group instead of being randomly assigned. Sleep questionnaire scores improved in the banana group, but sleep lab recordings showed no clear difference between groups.

You’ll often read that bananas help because of magnesium or potassium. We found no trial that tested that idea, so the explanation is popular but unproven. A university grant paid for the study.

What works: It’s cheap and needs no preparation.

What doesn’t: Seven people per group and no random assignment. The objective measures didn’t change.

Best for: A snack from the fruit bowl.

6. Whole-grain toast or oatmeal - Best for a warm snack

We found no trial of oats or whole-grain toast for sleep. What exists is a 2016 analysis of 26 healthy adults in a sleep lab. People who ate more fiber that day had more slow-wave (deep) sleep and less stage 1 (the lightest) sleep. People who ate more sugar had more brief awakenings, and people who ate more saturated fat had less slow-wave sleep.

That study measured the whole day’s diet and shows association only. Still, it’s a reason to prefer whole grains over a sugary bowl of cereal if you’re going to eat carbohydrates at night.

What works: A short ingredient list and whole-grain fiber.

What doesn’t: No direct sleep trial, and flavored instant oatmeal and sweetened toppings can add a lot of sugar.

Best for: Cold evenings and people who like something warm.

7. Cottage cheese or yogurt - Best for a protein snack

Protein before bed has been studied mostly for muscle. A 2019 review of that work reports that the authors’ own earlier studies, in younger and older adults, found no effect of bedtime protein on how fast people fell asleep or on sleep quality. The authors disclose grants or fees from companies including FrieslandCampina and PepsiCo.

One 2023 study of 14 college soccer players tracked their sleep with wearables. The players ate about 330 calories on average before sleep, and eating more or fewer calories, protein, fat, or carbohydrates didn’t change how long they slept or how often they woke. It didn’t test cottage cheese or yogurt, so it only suggests that a small snack didn’t hurt sleep for these athletes.

What works: A small protein snack wasn’t linked to worse sleep in the one wearable study.

What doesn’t: Neither food has a sleep trial, and the soccer-player study was small and observational.

Best for: People who get hungry again an hour after dinner.

When to stop eating

No health body sets a cutoff for healthy sleepers. The numbers that exist are for reflux. The American College of Gastroenterology’s 2022 guideline suggests avoiding meals within two to three hours of bedtime, and it rates that evidence low. The NHS says people with heartburn shouldn’t eat within three or four hours of bed.

If you don’t get heartburn, the picture is hazier. A large survey of 7,023 US adults linked a later last meal, and more eating occasions in a day, with worse self-reported sleep. The links were small, and a survey can’t tell you which came first. A late-night eater may simply sleep badly for other reasons.

One older study of 20 people with reflux (Orr and Harnish, 1998) found that a non-trigger meal at 9 pm didn’t raise reflux events compared with a meal before 7 pm. A later randomized trial of 32 people (Piesman, 2007) found more reflux when a standard meal came two hours before bed than six hours before. Both were small, so the evidence is mixed.

Eat dinner a few hours before bed, then keep any snack small and plain.

What to skip close to bedtime

• Heavy or large meals. They fall under the two-to-three-hour guidance above for people with reflux.

• Fatty and spicy food. The NHS lists fatty and spicy foods among heartburn triggers. The gastroenterology guideline says the evidence for avoiding them is weak, so it’s a personal call.

• Chocolate. The guideline notes that chocolate lowered the pressure of the valve that keeps acid down in lab studies. Dark chocolate also carries caffeine. The USDA’s food database lists 80 mg of caffeine per 100 g for 70% to 85% dark chocolate, so a 28 g square has roughly 22 mg.

• Sugary snacks. The 2016 fiber study tied more sugar to more brief awakenings.

• Alcohol and caffeine. We cover them in separate posts on alcohol and REM sleep and how late to drink coffee.

• Large drinks. A Canadian Urological Association report on frequent nighttime urination suggests no fluids for two hours before bed. It’s written for people who already wake up to urinate, so it won’t apply to everyone.

When night hunger needs a doctor

An occasional late snack is normal. A few patterns are worth raising with a doctor.

• Eating most of your food after dinner, or waking to eat. Night eating syndrome is defined as eating at least a quarter of your daily food after the evening meal, or eating after waking at night at least twice a week, with awareness of it, for at least three months. A 2022 review estimates it affects 1% to 2% of the general population.

• Eating while barely awake and not remembering it. Sleep-related eating disorder is a sleepwalking-type condition. A clinical review says it’s often tied to sleep medicines, most commonly zolpidem, and is frequently amnestic.

• Diabetes or low blood sugar. The CDC says anyone at risk for low blood sugar overnight should have a snack before bed, and that lows can happen during sleep without symptoms. If you take insulin or similar drugs, ask your care team what snack fits your plan.

• Reflux that won’t settle. The NIDDK lists warning signs such as trouble swallowing, vomiting, black or bloody stools, and unexplained weight loss. See a doctor if you have any of them.

If you’re pregnant, our pregnancy sleep guide covers heartburn and night waking with NHS guidance.

Frequently asked questions

Is it bad to eat before bed?

Not by itself. The evidence doesn’t show that a small snack harms sleep in healthy people, though a large meal close to bedtime is a reasonable thing to avoid, especially with reflux. A big survey linked later eating with worse sleep, but it can’t show cause.

How long before bed should you stop eating?

No authority gives a single number for healthy sleepers. For people with reflux, the American College of Gastroenterology suggests two to three hours and the NHS says three to four.

Does turkey make you sleepy?

We found no trial of a turkey snack. Turkey does contain the amino acid tryptophan, which we cover in our warm milk post.

What should you do if you wake up hungry at night?

If it happens often, or you eat while barely awake, mention it to a doctor. The CDC says anyone at risk for overnight low blood sugar should have a snack before bed. Waking at 3 am has many causes, and we cover them in why you wake up at 3 am.

Is chocolate a bad late-night snack?

Yes if you get reflux or are sensitive to caffeine. Dark chocolate has caffeine, and chocolate is on the NHS list of heartburn triggers. A 28 g square has roughly 22 mg of caffeine, which is unlikely to matter unless you’re sensitive to caffeine.