Food and sleep: what to eat for dinner and what to avoid for better sleep

How are what you eat and how you sleep related?

Good-quality eating is associated with fewer symptoms of insomnia in population studies [1]. This association does not prove that a particular menu treats insomnia. Poor sleep may also change the foods you feel like eating. That is why we look at the whole week before searching for a miracle food.

An everyday dinner might include vegetables, eggs or fish, with a side of rice, potatoes or bread. Pulses fit too if you prefer them. The useful thing is for dinner to satisfy your hunger without causing digestive discomfort.

The best dinner for a good night’s rest is one that nourishes you, agrees with you and fits your schedule.

How long before bed should you have dinner, and how much?

Dinner timing is worth considering, although there is no one-size-fits-all time. One review found associations between some meal timings and sleep, but trials comparing earlier and later eating did not observe major differences. The evidence does not yet support setting an interval that works for everyone [2]. As a practical trial, leave some time before lying down if you notice heaviness.

If you get home late, keep dinner simple. You could make a vegetable omelette with bread, or rice with fish and courgette. Eat until you feel satisfied; do not use sleep as a reason to go hungry. The amount depends on what you have eaten earlier, your activity and your needs.

If you get heartburn when you lie down, the clinical guideline on reflux suggests having dinner at least two or three hours before going to bed. This is a conditional recommendation based on low-certainty evidence [3]. Our hiatus hernia guide explains this situation in more detail.

When might caffeine and alcohol affect you?

Caffeine stays in the body for several hours. According to EFSA, its half-life in healthy adults is around 4 hours, with a range of 2 to 8 hours [4] . Half-life means that about half is still present after that time. So the caffeine in an afternoon coffee may still be active when you go to bed.

People’s sensitivity varies. If you find it hard to fall asleep, also check your intake of tea, cola drinks, chocolate and energy drinks. For a few days, note when you have caffeine and how you sleep. This can help you see whether having it earlier helps, without imposing a blanket ban on everyone.

Alcohol may initially make you feel drowsy. A review of trials found that it alters sleep architecture, especially REM sleep, even in small amounts [5]. The review does not allow us to state with confidence how much it increases each night-time awakening. If you use it to help you sleep, it is a good idea to discuss this with your doctor.

Does tryptophan or warm milk help you sleep?

Tryptophan is an amino acid found in protein-containing foods such as milk, eggs, fish and pulses. It plays a part in producing substances involved in sleep. That does not mean that a dinner rich in tryptophan will help you fall asleep quickly. In studies using concentrated alpha-lactalbumin, the outcome that improved most was the time it took to fall asleep; we do not know whether a usual serving of milk has the same effect [6]. See “Foods containing tryptophan”.

Warm milk can be part of a pleasant routine. A review and meta-analysis of trials involving milk and dairy products found an improvement in participants’ self-reported overall sleep quality; the authors called for more high-quality studies [7]. The effect of drinking it warm was not isolated. If you like it, have some; if you do not, you do not need to add it to help you rest.

A glass of milk is not a substitute for dinner. If you need something more, have it with toast, fruit or yoghurt, depending on your hunger. If milk causes you discomfort, choose another option you tolerate.

What do we know about kiwi and cherries?

Kiwi is a fruit you can include with dinner. In a small trial involving young men, eating fresh or dried kiwi with dinner was associated with improvements in some aspects of sleep quality and mood compared with the control group [8]. This does not show that kiwi treats insomnia in the general population or make it a necessary recommendation.

For tart cherries, a review of interventions using juice and other preparations found improvements in some sleep measures in some of the studies [9]. The doses, duration and study populations varied widely. The evidence is still limited. Eating seasonal cherries can be a pleasure; results from preparations do not establish a recommendation to eat fresh fruit for sleep.

Can too little sleep affect hunger and weight?

Too little sleep can affect appetite and food choices. In one trial, participants who extended their sleep consumed less energy than the comparison group [10]. This finding applies to that group and intervention. Sleeping more on its own does not guarantee weight loss.

Ghrelin and leptin are involved in hunger and fullness signals. A review of recent trials found no consistent changes in either after sleep restriction [11]. That is why we avoid explaining weight through an automatic chain of hormonal effects.

If you are looking for a weight-loss plan, also see these healthy dinner ideas and dinners to help you plan the week.

How can you fall asleep quickly if dinner is already sorted?

Your sleep routine matters too. Keep regular hours and make the transition to bed a calm one. In a survey by the American Academy of Sleep Medicine, some adults said that checking the news on their phone before bed made their sleep worse. This is self-reported perception, not a causal trial [12]. If you find it hard to switch off, try leaving your phone away from the bed and dimming the bedroom lights. See “Testosterone and nutrition”.

If you have had insomnia for a long time, sleep hygiene alone may not be enough. European guidelines recommend cognitive behavioural therapy specifically for insomnia as the first treatment option for chronic insomnia; a medical assessment can help identify causes and decide on the next step [13].

Do melatonin and other supplements help?

Melatonin is a hormone related to the sleep-wake rhythm. Products containing it are not a general solution for insomnia. The European guideline distinguishes between immediate-release and prolonged-release formulations, and limits the possible usefulness of the latter to certain older adults; it does not recommend a universal dose [13] . If you are considering melatonin or another supplement, remember that it is your doctor or dietitian-nutritionist who recommends it.

In consultations, we first review meals, timings and symptoms. We also ask about medication and night-time awakenings, because these clues can point to a cause that needs a different assessment.

What questions do we hear most often in consultations?

We hear three questions frequently. The first is whether there is a fruit that can help resolve insomnia. The second is whether eating a very small dinner always helps. The third is whether falling asleep after drinking means you have rested well. The answers depend on what happens throughout the night, not just how easily you close your eyes.

If you also experience hot flushes, our menopause meal-planning guide covers this situation. If sleep is also raising questions about weight, our longevity guide places nutrition among the other habits that support muscle and bone health.

Two dinners you can adapt to your schedule

For a quick dinner, make a spinach omelette with bread and tomato if you tolerate it. You can replace the egg with tofu and add olive oil. Have fruit for dessert if you feel like it. There is no ingredient you have to eat in order to sleep.

Another option is ready-cooked rice with chickpeas, sautéed courgette and olive oil. Adjust the amount to your hunger. If pulses cause discomfort, use fish or eggs instead. The aim is to find a dinner you can repeat in real life, without going to bed hungry or feeling too full.