Woman sleeping peacefully in soft pink bedding, representing the link between gut health and improved sleep quality
Gut Health, Skin Wellness & More: Expert Blog on Holistic Health

How Gut Health Impacts Sleep Quality

by Jelena Vulevic on Apr 24, 2025

Improve Your Sleep Naturally by Supporting Your Gut

Struggling with poor sleep or waking up tired? You’re not alone. In the UK, around 16 million adults report regular sleep issues. While many turn to melatonin supplements, sleep apps, or bedtime routines, a growing body of evidence suggests that the gut plays a pivotal role in regulating sleep.

Gut health influences everything from neurotransmitter production to your internal body clock, also known as your circadian rhythm. In this article, we explore the powerful link between gut health and sleep, how an imbalanced gut can disrupt rest, and simple strategies you can use to improve both.

Discover how nurturing your gut, and products like Y GUT sensitive, may help you sleep more soundly and wake up feeling refreshed.

What’s the Connection Between Gut Health and Sleep?

Your gut and brain are in constant communication through a complex network known as the gut-brain axis. This communication influences hormone production, emotional wellbeing, immune responses, and crucially, sleep regulation.

Here’s how gut health affects your ability to fall and stay asleep:

  • Melatonin production starts in the gut: While melatonin is often associated with the brain, much of it is actually produced in your gastrointestinal tract. A well-balanced gut microbiome supports steady melatonin production, helping to regulate your sleep-wake cycle.

  • Serotonin begins in the gut: Up to 90% of serotonin, a key neurotransmitter involved in sleep and mood, is produced in the gut. Poor gut health may lead to low serotonin levels, contributing to insomnia or restless nights.

  • Gut inflammation disrupts circadian rhythm: Chronic inflammation in the gut can interfere with the natural rhythm of your body, affecting both the quality and timing of your sleep.

  • The gut barrier matters: A strong gut barrier prevents harmful molecules from leaking into the bloodstream, which could otherwise trigger inflammation and disrupt the brain’s sleep signals.

How an Unhealthy Gut Contributes to Common Sleep Problems

If you’re experiencing sleep issues, your gut might be a hidden contributor. Here are some common sleep disorders with links to poor gut health:

Flat-style infographic showing the connection between gut inflammation and sleep disorders such as insomnia, sleep apnoea, and restless leg syndrome, using red, pink, and silver tones
  • Insomnia: A disrupted gut microbiome can impair serotonin and melatonin production, making it harder to fall asleep or stay asleep.

  • Sleep apnoea: Changes in the gut microbiota have been associated with systemic inflammation, which may worsen conditions like obstructive sleep apnoea.

  • Restless leg syndrome (RLS): Small intestinal bacterial overgrowth (SIBO), poor nutrient absorption, and iron deficiency, often related to gut health, can all contribute to RLS symptoms.

Non-Clinical Gut-Related Sleep Disruptors

Even without a formal diagnosis, gut-related imbalances can still interfere with restorative sleep:

  • Fragmented sleep: Gut discomfort, gas, or bloating during the night may lead to frequent awakenings or light sleep.

  • Difficulty falling asleep: Low serotonin or GABA levels, both influenced by the gut, can make it harder to relax at night, leading to longer sleep latency.

  • Waking too early: Blood sugar fluctuations, sometimes linked to poor gut barrier function or microbial imbalance, can cause early morning wakings.

  • Vivid dreams or restless sleep: Poor digestion or microbial fermentation late at night may interfere with REM sleep, making sleep feel less restorative.

  • REM and Deep sleep: Poor gut health weakens the intestinal barrier, leading to increased inflammation (endotoxemia) that disrupts circadian rhythms and ultimately reduces sleep quality, 

Overall, poor sleep weakens the intestinal barrier, triggering increased inflammation that further deteriorates sleep quality, creating a vicious cycle of gut-brain dysfunction.

Daily Habits That Support Sleep and Gut Health

Colourful assortment of gut-friendly foods including broccoli, citrus fruits, strawberries, raspberries, nuts, and seeds, supporting gut health and better sleep

Improving your gut health and sleep quality doesn’t have to be complicated. Here are some evidence-based lifestyle tips to support both:

 - Eat for your gut: Choose high-fibre foods, fermented foods like kefir or sauerkraut, and reduce sugar and ultra-processed foods that harm your microbiome.

 - Time your meals: Avoid heavy meals close to bedtime, and limit caffeine or alcohol in the evening.

 - Exercise regularly: Gentle, consistent movement such as walking, yoga, or swimming can help regulate your sleep cycles and gut motility.

 - Reduce stress: Stress affects both sleep and gut health. Try mindfulness meditation, deep breathing, or journaling to calm your nervous system.

 - Take gut health supplements: Prebiotics and postbiotics can nourish the beneficial bacteria in your gut and promote a healthy gut-brain connection.

Can Supplements Help You Sleep Better?

Yes, especially if they’re designed to support gut health.

Y GUT sensitive is a unique formulation combining prebiotics, postbiotics from Bifidobacterium breve, and 2g of fibre per dose. It’s been specifically developed to support the gut microbiome and gut barrier function, which are both critical for healthy sleep patterns.

By nourishing beneficial bacteria and reducing inflammation, Y GUT sensitive helps to create the ideal internal environment for a restful night’s sleep.

Final Thoughts: Prioritise Gut Health to Improve Sleep

Poor sleep can take a toll on your mood, focus, skin, and immune system, but you don’t need to rely on sleep aids to find relief. By supporting your gut health and gut barrier, you can address one of the root causes of sleep disturbances.

Try incorporating gut-friendly foods, mindful lifestyle habits, and science-backed supplements like Y GUT sensitive to rebalance your gut and naturally improve sleep quality.

By focusing on the gut-brain axis, you can restore your body’s natural rhythm and wake up feeling energised and refreshed.

Frequently Asked Questions: Gut Health and Sleep

How does gut health affect sleep?

Gut health influences sleep through the production of neurotransmitters like serotonin and melatonin, regulation of the circadian rhythm, and immune system interactions. An imbalanced gut can disrupt these processes, leading to poor sleep.

Can improving gut health help with insomnia?

Yes. By promoting a balanced microbiome and reducing gut inflammation, you may see improvements in serotonin and melatonin levels, both essential for restful sleep.

What foods improve gut health and sleep quality? 

Fibre-rich foods (like oats, lentils, and bananas), fermented foods (like yoghurt and kimchi), and foods high in tryptophan (such as turkey and seeds) can support your gut and promote sleep.

Are there supplements that help both gut and sleep?

Absolutely. Products like Y GUT sensitive, which contain prebiotics, postbiotics, and fibre, are designed to support gut barrier function and may contribute to improved sleep through better gut-brain signalling.

What is the gut-brain axis and why is it important for sleep?

The gut-brain axis is the communication network between your gut and brain. It plays a vital role in regulating mood, immunity, and sleep. A healthy gut supports better communication along this axis, leading to improved sleep quality.

Ready to wake up refreshed?

Supporting your gut health can significantly improve your sleep patterns. Discover how Y GUT sensitive helps promote a balanced gut microbiome and a resilient gut barrier, leading to restful nights and energised mornings.

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