Can what you eat during the day affect your sleep at night?

You may think of sleep as something that starts when you turn off the lights. But what you eat earlier in the day may be part of the picture, too. New research found that, among healthy young adults, days with more fruits and vegetables were associated with fewer disruptions in sleep that night. That does not mean one food can fix a bad night of sleep. It does suggest that small, everyday food choices may be worth paying attention to.

What the research found about food and sleep

A recent study led by researchers at Columbia University and the University of Chicago looked at whether what people ate during the day was related to how they slept that night.

1. The study followed daily food and sleep patterns

The researchers studied 34 healthy young adults who did not have known sleep problems. Participants reported what they ate using a food-tracking app, while a wrist-worn monitor provided objective information about their sleep.

In total, the researchers analyzed 201 paired diet and sleep days. This allowed them to look at the relationship between what someone ate on a particular day and their sleep that night.

2. More fruits and vegetables were linked with fewer sleep disruptions

The researchers found that days when participants ate more fruits and vegetables were associated with better sleep continuity that night.

In other words, the finding was not simply about falling asleep faster. It was about having fewer disruptions in the continuity of sleep.

The comparison was also important. The researchers compared higher fruit and vegetable intake with diets containing more healthy carbohydrates without added sugar.

This was an association, not proof that eating more produce directly caused better sleep. The study was also small and included healthy young adults, so the results should not automatically be applied to everyone.

3. The five-cup estimate needs some context

The researchers estimated that eating five cups of fruits and vegetables a day, an amount consistent with general dietary guidance, could correspond to a 16% improvement in sleep quality compared with eating none.

That number is an estimate from the researchers, not a guarantee that eating five cups will improve your sleep by 16%.

That distinction matters. A small study can offer an interesting clue without giving us a prescription for better sleep.

Why fruits and vegetables may be worth a closer look

You do not need to think of fruits and vegetables as special “sleep foods.” Their value in this research is that eating more of them during the day was associated with better sleep continuity that night.

1. Start with foods you already enjoy

If your usual lunch is a sandwich, add fruit. If dinner is pasta, add a side of vegetables. If you tend to snack in the afternoon, try a piece of fruit or some vegetables with a dip.

Small additions may feel much easier than trying to completely change your diet.

2. Try a few different options

The research looked at overall fruit and vegetable intake rather than proving that one particular fruit or vegetable works better than another.

That gives you plenty of flexibility.

Kiwi, tart cherries, tomatoes, and dark leafy greens are four practical choices from the foods discussed by registered dietitians. You can use fresh, frozen, cooked, or canned options depending on what is convenient for you.

3. Think about the whole day

You do not have to save all your produce for dinner.

Try adding berries or kiwi to breakfast, a piece of fruit to lunch, vegetables to an afternoon snack, and leafy greens or tomatoes with dinner.

The goal is not to create a perfect meal plan. It is simply to make fruits and vegetables a more regular part of your day.

If you are already thinking about how different foods can affect your nighttime rest, you may also want to look at foods and drinks that can make sleep harder.

8 foods that can fit into a sleep-friendly eating pattern

The following foods are useful examples, but they should not all be treated as proven sleep treatments. Some provide nutrients that are involved in normal biological processes related to sleep, while the strongest finding from the study was about overall fruit and vegetable intake.

1. Kiwi

Kiwi is an easy option when you want to add more fruit to your day. It also provides fiber and several vitamins and antioxidants.

You can slice one into yogurt, add it to a fruit bowl, or simply eat it on its own.

Research has explored kiwi in relation to sleep, but that does not mean everyone who eats kiwi will sleep better. Think of it as a nutritious food you can include rather than a guaranteed sleep aid.

2. Tart cherries

Tart cherries are another fruit that often comes up in conversations about sleep. They contain melatonin and other compounds that have attracted research interest.

You can eat whole tart cherries when available or add frozen cherries to yogurt or oatmeal.

If you choose tart cherry juice, check the label for added sugar and consider the serving size. There is no need to turn it into a large bedtime drink simply because it is associated with sleep.

3. Tomatoes

Tomatoes are an easy way to add vegetables to everyday meals.

Try them in a salad at lunch, mixed into a dinner sauce, added to a sandwich, or paired with eggs. Cooked and canned tomatoes can also make vegetables easier to include when fresh produce is not convenient.

Their nutritional value is a good reason to eat them. The evidence does not justify promising that tomatoes themselves will improve your sleep.

4. Dark leafy greens

Spinach, kale, collard greens, and Swiss chard can make an ordinary meal more nutrient-rich without requiring a complicated recipe.

Add spinach to eggs, toss greens into a soup, or sauté kale as a side dish.

These foods provide minerals and vitamins, including magnesium and several B vitamins. Those nutrients are relevant to normal body functions, but their presence does not prove that eating leafy greens will prevent sleep problems.

5. Nuts and seeds

Nuts and seeds can be an easy addition to meals and snacks. Walnuts, chia seeds, flaxseeds, and hemp seeds provide a mixture of nutrients, including magnesium and other minerals.

Try sprinkling seeds over oatmeal or yogurt, adding walnuts to a salad, or using nut butter on whole-grain toast.

A small portion can be enough. You do not need to eat a large amount late at night to get their nutritional benefits.

6. Turkey

Turkey is well known for containing tryptophan, an amino acid involved in the body’s production of certain compounds related to sleep.

But the familiar idea that turkey automatically makes you sleepy is too simplistic.

If you enjoy turkey, use it as part of a balanced meal or a light snack with whole-grain crackers and vegetables. Think of it as a useful protein source, not a guaranteed way to fall asleep.

7. Eggs

Eggs provide protein and several B vitamins, as well as tryptophan.

They can be especially convenient when you want something satisfying without preparing an elaborate meal. Try eggs with vegetables at breakfast, add a hard-boiled egg to lunch, or include them in a grain bowl.

Again, the practical takeaway is nutritional variety, not a promise that eggs will improve your sleep.

8. Edamame

Edamame is another convenient source of plant protein and provides several vitamins, minerals, and antioxidant compounds.

You can steam it as a side dish, add it to a grain bowl, or toss it into a stir-fry.

It is also a useful reminder that foods associated with tryptophan are not limited to meat and other animal proteins.

How to use food to learn more about your own sleep

The most useful part of this research may be the idea of paying attention to patterns rather than looking for a magic food.

1. Keep the rest of your routine fairly steady

If you suddenly change your meals, bedtime, exercise, caffeine, and screen habits all at once, it becomes difficult to know what might have influenced your sleep.

Instead, make one manageable change at a time.

2. Add more produce instead of chasing a perfect diet

Try adding one extra serving of fruit or vegetables to your usual day.

For example, have fruit with lunch or add another vegetable to dinner. After several days, notice whether anything about your sleep seems different.

You do not need to count every bite or judge yourself if one day does not go as planned.

3. Pay attention to patterns over several nights

One restless night does not tell you much by itself.

Instead, notice whether you repeatedly sleep differently on days when your meals are more or less balanced. You might also notice whether certain foods leave you feeling too full, uncomfortable, or hungry at bedtime.

That kind of observation can help you make changes that actually fit your life.

4. Remember that sleep is bigger than food

Food is only one part of healthy sleep.

Your sleep schedule, stress level, caffeine intake, activity, environment, medications, and health conditions can all matter. If you regularly have trouble sleeping, changing your diet should not be treated as a substitute for appropriate medical care.

The goal is not to find one perfect food. It is to build habits that support your overall health while giving yourself a chance to notice what works for you.

FAQs about Food and Sleep

Can eating fruits and vegetables help you sleep better?

A recent study found that, among 34 healthy young adults, days with higher fruit and vegetable intake were associated with fewer disruptions in sleep that night. The study does not prove that produce directly improves sleep, and the finding should not be treated as a guaranteed effect for everyone.

What foods should I eat during the day for better sleep?

Fruits and vegetables are a practical place to start, especially because recent research linked higher intake with better sleep continuity in healthy young adults. Kiwi, tart cherries, tomatoes, leafy greens, nuts, seeds, eggs, turkey, and edamame can also add useful nutrients to balanced meals.

Should I eat these foods right before bed?

Not necessarily. The research focused on what participants ate during the day and how they slept that night. Rather than relying on a special bedtime food, try making nutritious foods part of your regular meals and notice whether your overall eating pattern seems connected with how you sleep.

Conclusion

Better sleep may begin earlier in the day than you think. New research offers an interesting clue: among healthy young adults, eating more fruits and vegetables was associated with fewer sleep disruptions that night. That does not make any single food a sleep cure. Instead, it gives you a simple idea to try. Add more produce to meals you already enjoy, keep your routine reasonably steady, and pay attention to your own sleep patterns over time. Small, realistic changes are often easier to maintain than a complete diet overhaul.

References

1. Columbia University Vagelos College of Physicians and Surgeons
   https://www.cuimc.columbia.edu/
2. University of Chicago Medicine
   https://www.uchicagomedicine.org/
3. Centers for Disease Control and Prevention
   https://www.cdc.gov/healthy-weight-growth/healthy-eating/fruits-vegetables.html
4. National Heart, Lung, and Blood Institute
   https://www.nhlbi.nih.gov/health/sleep-deprivation