From Mood to Immunity: How Gut Health Shapes Everyday Wellbeing
From mood, stress and sleep to immunity, skin, energy and hormonal comfort, the gut plays an important role in how we feel day to day.
Central to this is the gut microbiome, the community of microorganisms, including friendly bacteria, that live in the digestive tract. Everyone’s microbiome is unique and influenced by many factors, such as diet, lifestyle, sleep, stress, age and environment – but small, consistent habits can help nurture the gut and support overall wellbeing.
The digestive system doesn’t work in isolation. It communicates with the brain, immune system, skin, metabolism and hormones through a series of connections often described as gut axes. Our expert Jo Travers explains how each one can support everyday wellbeing.
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The Gut-Brain Axis: supporting mood, stress and sleep
The gut and brain are in constant communication. This two-way connection, often referred to as the gut-brain axis, helps explain why stress can affect digestion and why the gut is increasingly discussed as part of wider emotional wellbeing.
Practical takeaway: Build a gut-brain-friendly rhythm into your day. Eat regular meals, add a fibre-rich food to breakfast such as nuts, seeds or colourful fruit, and consider a probiotic. A short walk after lunch and a calmer evening routine can also support digestion, sleep and overall wellbeing.
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The Gut-Immune Axis: supporting natural defences
Around 70% of immune cells are found in the gut, and the gut microbiota plays an important role in the body’s defences. Acting like “gatekeepers”, gut microbes help train immune cells to distinguish between threats and substances to tolerate. Beneficial bacteria also compete with potentially harmful microbes for space and nutrients, making it harder for them to settle and multiply.
Practical takeaway: Support your immune system with a balanced, fibre-rich diet. In the UK and Ireland, consider a vitamin D supplement during autumn and winter, when sunlight isn’t strong enough for the body to make sufficient vitamin D. Regular outdoor activity can support production in warmer months, while food sources include oily fish, egg yolk, meat, liver, milk and fortified foods.
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The Gut-Skin Axis: supporting wellbeing from the inside out
The gut-skin axis describes the relationship between the gut microbiome and skin health. It may influence inflammation and immune response, while emerging research suggests the microbiota could also play a role in collagen production. Skin health is complex and shaped by genetics, hormones, skincare, environment, stress and diet.
Although no single food or habit will transform the skin, a varied, nutrient-rich diet that supports the gut can contribute to skin health as part of wider wellbeing. Consistent habits such as staying hydrated, sleeping well and eating a broad range of plant foods can all play a part.
Practical takeaway: Support your skin from within with hydration, sleep and nutrient-rich foods. Include healthy fats, vitamins and antioxidants—particularly selenium, zinc, vitamin E and vitamin C—from foods such as oily fish, avocado, berries, nuts and seeds. Water-rich foods like watermelon and cucumber can also support hydration.
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The Gut-Metabolic Axis: supporting energy and appetite balance
The gut helps the body break down food, absorb nutrients and manage how energy is released. A healthy gut-friendly diet can support steadier energy through the day, particularly when meals include fibre-rich carbohydrates, protein, healthy fats and plenty of plant foods.
Fibre helps food move through the gut, supports fullness and provides fuel for beneficial bacteria. It also makes meals more satisfying and gut friendly.
A fibre-rich diet can also support wider metabolic health by helping to lower LDL cholesterol and maintain healthy blood pressure.
Practical takeaway: Build balanced plates by combining fibre-rich carbohydrates, protein and colourful plants—for example, porridge with fruit and seeds, a wholegrain wrap with hummus and salad, or bean chilli with brown rice. If you experience an afternoon energy dip, try adding complex carbohydrates such as brown rice or sweet potato, protein such as chicken, tofu or fish, and healthy fats such as avocado, nuts or chia seeds to lunch.
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The Gut-Hormone Axis: supporting comfort through life stages
Hormones and digestion can influence one another, which is why some women notice changes in bloating, bowel habits or appetite at different points in the menstrual cycle, during pregnancy or during menopause transition.
The gut also plays a role in hormonal balance by processing and removing substances from the body, including hormones like oestrogen and their by-products. While hormone changes are complex and individual, consistent gut-friendly habits can support comfort and routine during different life stages.
Practical takeaway: Hormonal changes can influence digestion, appetite and energy levels throughout the menstrual cycle. Supporting your gut with regular meals, fibre-rich foods, hydration and a variety of nutrient-dense foods can help maintain comfort and routine. During menstruation, iron-rich foods may be particularly helpful, while maintaining consistent sleep and movement habits can support wellbeing throughout the month.
During menopause, heart and bone health become a greater dietary focus because the risks of cardiovascular disease and osteoporosis increase. Include calcium-rich foods such as dairy and green leafy vegetables, alongside sources of unsaturated fat such as olive oil, avocado, nuts, seeds and oily fish.
Gut changes across the menstrual cycle are common and may vary from month to month. If bloating, pain, bowel changes or digestive discomfort are persistent, severe or new, speak to a healthcare professional. Tracking symptoms with the Love Your Gut Food, Mood & Symptoms Diary can be a useful starting point.
In summary
Gut health advice should empowerrather than overwhelm. Small, realistic choices made consistently are more valuable than striving for a perfect diet, and even simple changes can help support the gut over time.
Because everyday habits can shape the gut microbiome, there are many opportunities to support it through food, movement, sleep and stress management.
Take the time this Love Your Gut Week to look at the small changes you can make to support your gut health and wellbeing.
See all our Love Your Gut Week 2026 resources here.