Sleep is influenced by many factors, including schedule, light exposure, physical activity, stress, health conditions, medicines and what you eat or drink. No single food can guarantee a good night's sleep.

Limit caffeine later in the day

Caffeine is a stimulant found in coffee, many teas, cola, energy drinks and chocolate. Its effects can last for hours, so caffeine consumed late in the day can make it harder for some people to fall asleep.

Sensitivity varies. If sleep is difficult, consider moving caffeinated drinks earlier in the day and observing whether sleep improves.

Avoid large meals close to bedtime

Heavy or large meals shortly before bed can cause discomfort or indigestion that interferes with sleep. Eating regular meals and allowing time to digest a large evening meal may be more comfortable.

A light snack can be reasonable if you are genuinely hungry before bed, but there is no need to eat a specific so-called sleep food.

Alcohol is not a sleep solution

Alcohol can initially make a person feel sleepy, but it can lead to lighter and more disrupted sleep later in the night. Using alcohol as a sleep aid is therefore not a reliable strategy for better-quality sleep.

What about kiwi, bananas, almonds and other foods?

Individual foods such as kiwi, bananas, nuts, fish, oats and herbal teas are often promoted for sleep because they contain nutrients or compounds involved in normal body functions. Some have been studied in relation to sleep, but evidence is not strong enough to promise that any one of them will reliably treat insomnia.

These foods can still form part of a balanced diet when appropriate for the individual. Their nutritional value should be separated from claims that they are proven sleep treatments.

Focus on the overall routine

Healthy sleep habits generally matter more than choosing one particular evening food. Keeping a consistent sleep and wake schedule, getting appropriate daytime activity, reducing bright light and stimulating activities before bed, and keeping the bedroom quiet, cool and dark can all support sleep.

If sleep problems continue, regularly affect daytime functioning or involve symptoms such as loud snoring, breathing pauses or severe daytime sleepiness, discuss them with a healthcare professional. Persistent insomnia and other sleep disorders may require assessment and specific treatment.