Taking control of your gut health is one of the most underrated moves you can make for your energy and your focus. It's not just about digestion. Your gut and your brain are in constant communication, which is exactly why gut health, energy, and mental clarity tend to rise and fall together.
If you've ever wondered how to boost gut health without overhauling your entire life, or you're specifically trying to figure out how to overcome brain fog that shows up like clockwork every afternoon, this post is for you. There are dozens of ways to improve gut health out there, but most of them are noise. I want to share the five tools that have actually made a difference for me and for the ambitious, busy clients I work with.
Let's get into it.
My Favourite Product: Peppermint Tea
I've tried a lot of things over the years for post-meal bloating and sluggish digestion, especially after a heavy client dinner. Peppermint tea has quietly become the one thing I reach for every single time.
Why it's my favourite:
It's simple, soothing and takes zero effort to fit into a packed day. Peppermint has good evidence for easing gut symptoms: peppermint oil capsules have been shown to help with IBS. Research on the tea itself is limited, but many people find it calming after a meal. No prep, no faff, just hot water and a teabag.
Benefits of peppermint tea:
May help ease bloating and general digestive discomfort
A soothing ritual after larger meals
A calming, caffeine-free option for the afternoon, so you're not adding to your caffeine load during the mid-afternoon slump
How to implement this in your life:
Keep a box at your desk for after lunch
Order it instead of a second coffee when you're out for a client dinner
Brew a cup 20-30 minutes after a heavier meal, not during it
As always, quality matters! A proper loose-leaf or good-quality bag makes a noticeable difference over the cheapest option on the shelf.
One note: peppermint relaxes the muscle at the top of your stomach, so it can make acid reflux or heartburn worse. If that's something you experience, ginger or fennel tea may be a better choice.
2. My Favourite Supplement: A Quality Probiotic
Supplements aren't a fix-all, but a well-formulated probiotic is one I consistently recommend, particularly for clients navigating a lot of travel, client dinners, and inconsistent eating patterns.
Why it's my favourite:
Probiotics aren't one-size-fits-all. Their effects depend on the specific strain and what you're taking them for, and the evidence in healthy people is still developing. But for some people, particularly during periods of travel, disrupted routines or after antibiotics, the right probiotic can help. I first started taking one properly during a stretch of frequent travel, when my digestion had gone completely off track and it started to affect my energy and mood. Within a few weeks, both had noticeably improved.
Benefits of a quality probiotic:
Some strains may help with digestive symptoms such as bloating and irregular bowel habits
Some strains may help restore balance after antibiotics or travel-related gut upsets
Early research is exploring links between specific strains and mood, through the gut-brain connection
How to implement this in your life:
Take it consistently, at the same time each day, rather than sporadically
Pair it with a meal to support absorption
Give it time. Try it consistently for around four weeks before judging whether it's helping. If you notice no difference, it may not be the right strain for you, and that's worth discussing with a practitioner.
3. A Podcast Favourite: The Energy Blueprint Podcast
When I'm commuting or making dinner, this is my go-to. It's one of the few resources that actually connects the dots between gut health, energy, and mental performance instead of treating them as separate topics.
Why it’s my favourite
It breaks down genuinely complex science, blood sugar regulation, circadian rhythm, gut-brain signalling, into something practical and usable. One episode on the gut-brain axis completely changed how I explain brain fog to clients, and it's a lesson I now share constantly.
Benefits of listening
Practical strategies to improve mental wellbeing and mental clarity, not just theory
Insight from leading researchers, translated into plain language
Motivation to stay consistent with the small daily habits that actually move the needle
How to implement this into your life
Queue up an episode for your commute instead of the radio
Jot down one takeaway per episode you want to actually try
Share a favourite episode with a colleague, it's a great way to improve mental health at work culture too, not just your own
4. My Favourite Gut Health Foods: Fermented Foods and Fibre-Rich Vegetables
As a nutritionist, I know exactly how powerful food can be, and when clients ask me for foods that improve gut health, this is always where I start.
Why they’re my favourite
Fermented foods like sauerkraut, kimchi, and natural yoghurt introduce beneficial bacteria directly into your gut, while fibre-rich vegetables (think leafy greens, broccoli, and lentils) feed the good bacteria already living there. Together, they're one of the most reliable, food-first ways to improve gut health, full stop.
Benefits of fibre rich foods
Increased energy and reduced afternoon crashes
Improved digestion and more regular bowel habits
Better skin and reduced inflammation over time
Fibre in particular plays a huge role in keeping things moving and clearing out what your body doesn't need, which has a knock-on effect on how clear-headed and energised you feel.
How to implement this into your life
Add a forkful of sauerkraut or kimchi to lunch or dinner a few times a week
Swap a flavoured yoghurt for natural yoghurt or kefir with berries at breakfast
Aim for variety: different vegetables, beans, lentils, whole grains, nuts and seeds across the week. Research suggests eating 30 different plant foods a week is linked with a more diverse gut microbiome
Increase fibre gradually and drink plenty of water, as a sudden jump can cause bloating while your gut adjusts
5. My Favourite Lifestyle Hack: A 10-Minute Walk After Eating
Sometimes the smallest changes make the biggest difference, and this is the one I recommend more than almost anything else.
Why it’s my favourite
It's free, it's simple, and it's one of the fastest ways to improve gut health, blood sugar, and mental clarity all at once. A short walk after eating has become non-negotiable for me, especially after client lunches where the food (and the wine) tend to be heavier than usual.
Benefits of walking after eating
Helps food move through your digestive system more efficiently
Blunts the post-meal blood sugar spike, which directly supports steadier energy and helps you overcome brain fog before it even sets in
Reduces bloating and gas, especially for anyone dealing with IBS-type symptoms
How to implement this into your life
Set aside just 10 minutes after your largest meal of the day
Take the call you were going to sit through anyway, but walk while you do it
Ask a colleague to join you. It's an easy, low-effort way to improve mental health at work culture while you're at it
Quick Answers: Gut Health FAQ’s
How long does it take to improve gut health?
Most people notice initial shifts, less bloating, steadier energy, within 2-4 weeks of consistent changes. A more meaningfully rebalanced gut microbiome typically takes closer to 3 months of sustained effort. This isn't a 5-day reset. It's built the same way everything sustainable is: one consistent choice at a time.
Does fasting improve gut health?
It can, for some people, in some contexts, but it's not the blanket fix it's often sold as. Giving your digestive system a break between meals matters, but for busy professionals already running on inconsistent eating, high stress, and poor sleep, aggressive fasting protocols often do more harm than good to energy and blood sugar stability. Consistent, well-timed meals tend to be the better starting point.
Bringing it all together
By incorporating these five tools, peppermint tea, a quality probiotic, the right podcast, fermented and fibre-rich foods, and a short walk after eating, you'll be well on your way to steadier energy, sharper focus, and a gut that's actually working with you instead of against you.
Health isn't built through one big decision. It's built through the small choices we make every single day.
If you're ready for support figuring out exactly how to improve gut health, energy, and mental clarity in a way that fits your actual life, meetings, travel, and client dinners included, that's exactly what we work through inside The Realign Method.
References
McKay, D. L., & Blumberg, J. B. (2006). A review of the bioactivity and potential health benefits of peppermint tea (Mentha piperita L.). Phytotherapy Research, 20(8), 619–633.
Alammar, N., Wang, L., Saberi, B., Nanavati, J., Holtmann, G., Shinohara, R. T., & Mullin, G. E. (2019). The impact of peppermint oil on the irritable bowel syndrome: a meta-analysis of the pooled clinical data. BMC Complementary and Alternative Medicine, 19(1), 21.
Hill, C., et al. (2014). Expert consensus document: The International Scientific Association for Probiotics and Prebiotics consensus statement on the scope and appropriate use of the term probiotic. Nature Reviews Gastroenterology & Hepatology, 11(8), 506–514.
Wastyk, H. C., et al. (2021). Gut-microbiota-targeted diets modulate human immune status. Cell, 184(16), 4137–4153.
Makki, K., Deehan, E. C., Walter, J., & Bäckhed, F. (2018). The impact of dietary fiber on gut microbiota in host health and disease. Cell Host & Microbe, 23(6), 705–715.
Buffey, A. J., Herring, M. P., Langley, C. K., Donnelly, A. E., & Carson, B. P. (2022). The acute effects of interrupting prolonged sitting time in adults with standing and light-intensity walking on biomarkers of cardiometabolic health: a systematic review and meta-analysis. Sports Medicine, 52(8), 1765–1787.
Written by Alison Diss Nutrition
Alison Diss is a BANT Registered Nutritional Therapist, Personal Trainer and founder of The Realign Method. She created The Realign Method after her own experience of burnout in a high-pressure career and has helped 100+ ambitious professionals achieve steady energy, a sharper mind and a stronger body. She's based in Surrey and works with clients UK-wide and online.