Sleep is one of the most powerful tools we have for supporting our physical and mental health. I often refer to it as the overlooked pillar of wellbeing. When we sleep well we make better food choices, we have more energy, we focus better, our hormones are happier and so on. Yet for many people, switching off at night and getting a good night’s rest is not always straightforward. Stress, busy schedules and evening screen time all play a role, but one often overlooked factor is nutrition.

What we eat, when we eat, and even how we eat can influence sleep quality through multiple biological pathways. In this blog, we’ll look at foods and patterns that can support better sleep, and the ones that are most likely to keep you staring at the ceiling.

Sleep begins long before your head hits the pillow. One of the most important foundations for good sleep is stable blood sugar across the day. I often see clients waking in the night because their blood sugar has been imbalanced during the day. When we fix their blood sugar, they often get much better and more restorative sleep. 

If meals are skipped or heavily refined, blood sugar can spike and crash. These fluctuations may increase stress hormones such as cortisol and adrenaline, which can make it harder for the body to fully relax at night, leading to difficulty falling asleep or waking in the night. 

Eating 3 balanced meals throughout the day (plus 1 -2 balanced snacks if needed) is an important way to support both more stable energy and more settled sleep. A balanced meal includes:

• Protein (eggs, fish, chicken, tofu, yoghurt, beans)

• Fibre-rich carbohydrates (whole grains, vegetables, fruit)

• Healthy fats (olive oil, avocado, nuts and seeds)

These nutrients work together to provide steady energy and reduce the likelihood of late-night hunger or overnight wake-ups.

There are several key nutrients that act as building blocks and co-factors for your sleep hormones. Tryptophan, an amino acid we get from certain protein-rich foods, is converted into serotonin, a brain chemical that supports mood, relaxation, and sleep regulation. From there, serotonin is converted into melatonin - our sleep hormone. 

This process depends on nutrients such as vitamin B6, vitamin D, magnesium, and the omega-3 fatty acids EPA and DHA. Melatonin is then released into the bloodstream in response to darkness, acting as a hormonal signal that it’s time to sleep and helping to synchronise your internal body clock with the day-night cycle.

So, including these key building blocks and co-factors in your diet supports the production of our sleep hormones. Aim to include: 

• Tryptophan rich foods such as turkey, chicken, eggs, quality dairy, oats, pumpkin seeds, tofu and tempeh

• Magnesium through dark leafy greens, nuts and seeds, and avocado

• Vitamin B6 through chickpeas, salmon, tuna, chicken, potatoes, bananas and sunflower seeds

• Omega-3 fats through oily fish such as salmon, mackerel and sardines

• Vitamin D through sunlight exposure, eggs, oily fish and/ or a quality supplement

In some cases, targeted supplements may also help. For instance, Sleepee contains nutrients designed to support the body's natural sleep processes, including ingredients that help to promote relaxation and healthy circadian rhythms. 

Timing of when you eat also matters when it comes to sleep. Eating a large meal very late in the evening can make it harder for the body to fully wind down. Digestion requires energy, and if your body is still actively processing food when you go to bed, this can disrupt the natural transition into deep sleep. It can also cause uncomfortable digestive symptoms such as reflux, which are worse when you lie down. 

In a study of over 7000 adults, those who ate their meals latest had significantly worse sleep scores than early eaters, even after accounting for other lifestyle factors

Ideally, aim to finish dinner two to three hours before bedtime. This gives your digestive system plenty of time to settle while still ensuring you are adequately nourished for the night ahead.

Alcohol can sometimes make you feel sleepy initially, but it tends to disrupt the quality of sleep later in the night. Research suggests that each additional drink may reduce perceived sleep quality by around 3-4%. While alcohol may help you fall asleep faster, it can suppress REM sleep in the first half of the night and lead to more fragmented, lighter sleep and early-morning waking as the body metabolises it. A few simple strategies can help:

• Limit alcohol in the evening, particularly within 3-4 hours of bedtime.

• Alternate alcoholic drinks with water to support hydration.

• Keep intake moderate, especially on weeknights when restorative sleep is most important.

• If you are having a drink with dinner, try to finish earlier in the evening to give your body more time to metabolise it before sleep.

Small adjustments like these can help minimise sleep disruption while still allowing you to enjoy alcohol occasionally.

Late-night snacking on highly refined foods such as biscuits, chocolate or sugary cereals may disrupt sleep through blood-sugar fluctuations. Large spikes in blood sugar can trigger a compensatory drop later in the night, potentially activating stress hormones that wake you from sleep.

Instead, if you need something in the evening, opt for foods that provide protein, fibre and healthy fats to keep blood sugar stable. For example:

• Apple slices with almond butter

• Greek yoghurt with berries and seeds

• A boiled egg with oatcakes

These combinations support steady energy while avoiding the rollercoaster effect that refined sugar can create.

Sleep is not simply about feeling tired; it requires the nervous system to shift from a state of alertness into a state of calm. Nutrition can play a role here ,too.

Magnesium-rich foods such as leafy greens, avocados and pumpkin seeds may support relaxation by helping regulate the nervous system.

Hydration also matters. Even mild dehydration can increase cortisol levels and disrupt sleep quality.

Some people also benefit from incorporating calming evening rituals such as herbal teas, especially ones containing herbs such as chamomile. Nutritional supplements that support relaxation, such as Calmee, may help further support the body’s transition into rest.

One of the less obvious ways nutrition affects sleep is through circadian rhythm alignment. The body’s internal clock responds not only to light, but also to patterns of eating.

Regular meal times help reinforce healthy biological rhythms and signal to the body when it is time to be alert and when it is time to wind down. Aim to:

• Eat breakfast within a couple of hours of waking

• Space meals roughly 3-5 hours apart

• Maintain a consistent dinner time where possible

Over time, these regular rhythms help support more predictable sleep patterns.

Better sleep is rarely about a single food. Instead, it’s the result of consistent daily habits that support the body’s natural rhythms. Balanced meals, thoughtful caffeine and alcohol intake, supportive nutrients and regular eating patterns all play a role in creating the conditions for restorative sleep.