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Calm, repair and rebuild digestive health, a science-led protocol designed to recalibrate your gut, your microbiome, and the way you feel.
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If you are here, it is probably because your gut has been trying to get your attention. AND I want to say this here, IBS symptoms are not something that you need to live with!
Perhaps digestion feels unpredictable, maybe you are more bloated than usual, your energy dips in the afternoon, or you simply feel that things are not working quite as smoothly as they once did. It is incredibly common, and it is rarely caused by just one thing. Stress, travel, antibiotics, irregular meals, ultra-processed food, alcohol and lack of sleep all gradually chip away at digestive resilience.
The great news is that the gut tends to respond very well when we simplify things.
This plan is designed to do exactly that. Over the next few weeks, we are going to remove common irritants, bring structure back to eating patterns, and focus on foods that are easier for the digestive system to manage. The aim is to create the right conditions for the gut lining, digestive enzymes and microbiome to settle and rebalance.
You will notice the structure is intentionally simple. Three meals a day. Time between meals. Food that is cooked and easy to digest in the early stages. This rhythm is not accidental. Leaving space between meals allows the migrating motor complex to do its job, essentially the digestive system's internal cleaning cycle, which helps reduce bacterial overgrowth in the small intestine.
As the weeks progress, we gradually widen the range of foods again while continuing to support the gut with sensible habits and, where helpful, targeted supplements.
Some people notice changes quite quickly. Less bloating, better bowel movements, clearer thinking and steadier energy. For others, the shifts might be slower, but they will come!
The most important thing is consistency. Eat simply, chew properly, follow the plan and allow your body time to recalibrate. The gut is far more adaptable than most people realise. When you give it the right environment, it responds.
I will say it again, Irritable bowels are not something you just have to live with. They are a very loud message from your body that something in the gut-brain ecosystem is out of balance and needs proper support.
Medically, IBS, irritable bowel syndrome, is actually not a diagnosis, it is a name that is given when things like cancer and IBD have been ruled out. That means you have real, physical symptoms such as pain, bloating and bowel changes, but standard scans and scopes are usually normal.
There are MANY different symptoms. Some people are mainly constipated, some are mostly diarrhoea, and some swing between the two. Others have bloating, gas, burping, and a less than full evacuation of the bowel.
IBS is not just 'a bit of a sensitive stomach'. The most common symptoms I see are:
On top of that, there is the knock-on effect: fatigue, brain fog, low mood, anxiety about leaving the house or eating out, worrying about where the next toilet is. It stops being just a gut issue very quickly.
Somewhere between 10 and 20 per cent of the population will fit an IBS-type picture at any one time. So if you are reading this thinking 'is it bad enough to count?', if it is affecting your life, it counts.
Conventional medicine is brilliant at ruling out the big, scary stuff, cancer, inflammatory bowel disease, coeliac disease. We absolutely want that. Once those boxes are ticked, most people with IBS are sent away with some version of: take a bit of this for the pain, this for constipation or diarrhoea, maybe try a low FODMAP diet, try to relax.
There is nothing wrong with symptom relief. The problem is, it rarely exposes the driver, what is causing this? It does not ask: is there dysbiosis, SIBO, low-grade inflammation, an exhausted nervous system, bile acid issues, a leaky gut barrier, or simply a microbiome that has not been properly fed in years? It manages the noise but doesn't turn it off.
The way I want you to see IBS throughout this plan is as a signal. Your gut is essentially putting its hand up and saying, 'I cannot keep doing business as usual.' This three-week protocol is about listening to those messages and responding to them. You are not broken. Your body is asking for a bit of TLC, and that is exactly what we are going to do.
Your gut is not acting up for no reason. There are usually a few big themes running underneath the IBS label, and once you see them, the whole picture starts to make sense.
Dysbiosis means the balance of microbes in your gut has shifted. You have trillions of bacteria, but you may have fewer of the helpful species that make short-chain fatty acids, more of the gas-producing inflammatory strains, and less overall diversity, which makes the system more fragile.
This can mean that when you eat, they over-ferment, you bloat, you ache, you run to the loo or you cannot go at all. The aim of this plan is to change who lives there and what they are doing.
SIBO happens when bacteria that should mostly live in the large intestine creep up into the small intestine. The small intestine is where you absorb protein, fats, vitamins and minerals. Overcrowding there means fermentation starts too early, huge bloat after eating, pain, cramping, diarrhoea, constipation or swings between the two.
You do not have to have SIBO to have IBS-like symptoms, but in clinic I see a big overlap.
Your gut lining is one cell thick. The cells are held together by tight junctions that decide what gets through. When that lining is inflamed, undernourished or constantly irritated, those junctions loosen. More undigested food particles, toxins and bacterial fragments slip through, winding up your immune and nervous systems.
Part of this protocol is about giving that lining what it needs: fewer irritants, more nutrients, more of the right fibres, fat and amino acids so it can repair.
Your gut and your brain are in constant communication via the vagus nerve. When your nervous system is stuck in fight-or-flight, from chronic stress, poor sleep, past illness, overtraining, undereating, digestion is deprioritised, the gut becomes more sensitive, and the microbiome shifts.
This is why we talk about breath, pacing and sleep as non-negotiables rather than nice extras.
The HPA axis controls cortisol and has tentacles into blood sugar, immune function, sleep and gut behaviour. When constantly triggered: cortisol rhythm gets messy, blood sugar swings harder, inflammation and gut permeability rise, pain perception changes.
Calming IBS without ever touching the HPA axis is like trying to fix a leaking ceiling without looking at the roof.
Bile is made in your liver, stored in your gallbladder and released into your small intestine when you eat. It breaks down fats and acts as a signalling molecule with a big say in motility and microbial balance. Sluggish bile flow can cause nausea after fatty meals, pale or floating stools, diarrhoea that's worse after eating, and bloating.
Part of this plan is to support bile gently through foods, meal structure and, where appropriate, targeted nutrients.
You are not working on your IBS in a vacuum. You are working on one of the core control centres for how you age, how you think, how you recover and how inflamed you are allowed to be. This is gut work, but it is also long-term health work.
The foods your good bacteria like to eat, onions, leeks, garlic, asparagus, oats, cooked and cooled potatoes or rice, beans, lentils. In IBS we use gentle, cooked, lower-FODMAP forms first, then build up.
Live microbes that can help your gut behave better. Food first, live yoghurt, kefir, sauerkraut, kimchi, miso. From supplements you can be more targeted with specific strains.
The beneficial compounds your microbes produce, primarily butyrate and other short-chain fatty acids. You create the environment by feeding prebiotics, plants and fermented foods.
The building blocks of protein and the raw material for gut repair. You need enough spread through the day, not just at dinner. Glutamine is particularly important for intestinal cells.
Soluble fibre (oats, chia, flax, psyllium, cooked veg) forms a gel that soothes. Insoluble can be too scratchy when inflamed. We start with softer fibres and build diversity as the gut settles.
The biologically active compounds in plants. Many polyphenols travel to the colon where microbes use them as fuel, favouring beneficial species. Think olive oil, herbs, berries, dark chocolate.
Some foods contain fermentable carbohydrates known as FODMAPs. These are short-chain carbohydrates not always fully absorbed in the small intestine. In a sensitive gut they ferment, causing gas, bloating and changes in bowel movements. This plan is not a strict low-FODMAP diet, we reduce common triggers in the early stages and reintroduce gradually.
| Type | What It Is | Common Foods |
|---|---|---|
| Fructose | A natural sugar in fruit, hard to absorb in excess | Apples, pears, mango, watermelon, honey |
| Lactose | The natural sugar in milk and dairy | Milk, soft cheese, yoghurt, ice cream |
| Fructans | Fibres in many grains and vegetables | Wheat, rye, onions, garlic, leeks |
| GOS | Fibres found mainly in legumes | Lentils, chickpeas, kidney beans |
| Polyols | Sugar alcohols in some fruits & sweeteners | Apples, pears, mushrooms, cauliflower |
This whole plan is built on a clinical framework used in functional medicine for gut work: Remove, Replace, Reinoculate, Repair, Rebalance. It ensures we do things in the right order so your gut is not overwhelmed.
Reduce irritation, gas and digestive disruption by removing the most obvious triggers, ultra-processed foods, excess sugar and alcohol, IBS trigger foods. Basic meal structure so the gut gets breaks between meals.
If you can't break food down properly, even the best diet sits and ferments. Slowing you down at meals, using warm cooked food, and bringing in bitter and sour foods (rocket, lemon, ACV, ginger) to cue stomach acid, bile and enzymes.
Once calmer, we gently rebuild a more diverse, stable microbiome. Prebiotic foods in cooked forms, small daily doses of fermented foods, increased plant diversity, then optional probiotics.
Enough protein at each meal for amino acids to rebuild the gut lining, foods rich in zinc, omega-3s and fat-soluble vitamins, and gentle soothing foods, bone broth, slow-cooked stews, well-cooked veg.
This is where we go from the plan to life. Stress management, basic sleep hygiene, daily movement. Rebalancing maintains progress and stops symptoms snapping back.
These apply for the full 21 days.
Three phases, each building on the last. Pick a phase below to see exactly what to do, the goal, daily steps, what a day looks like, and how you will know it is working.
The first seven days move your digestive system out of a reactive state. We remove the most common irritants while actively supporting digestion.
Take these out completely for the week:
Three meals a day, no snacking, 3-4 hours apart. Each plate: protein + cooked vegetables + healthy fats, with a moderate portion of gentle carbs.
Eggs, fish, seafood, poultry, meat, tofu, tempeh
Quinoa, basmati & brown rice, GF oats, buckwheat · olive oil, avocado, olives, oily fish
10 minutes before lunch and dinner: 1 tsp apple cider vinegar in warm water with fresh ginger. If it causes reflux, swap for lemon juice or ginger tea. Add a broad-spectrum digestive enzyme with meals.
By days 4-7, most people notice:
Mild fatigue, headaches or low mood are common as sugar and processed food clear your system. These pass quickly as blood sugar stabilises. This is not a fast, keep eating three full, balanced meals every day.
You should arrive here with less bloating and better tolerance. Keep everything from Week 1 in place and layer these in gradually.
Stay off ultra-processed foods, sugar, alcohol, gluten, dairy (kefir ok), raw produce and large servings of beans and lentils. Three meals, spaced, primed before each one.
L-glutamine 5g twice daily, morning and evening, away from meals. This is the preferred fuel source for intestinal cells and is widely used to support gut barrier integrity.
Add bone broth or a mineral-rich vegetable broth daily. Consider starting a multi-strain probiotic (Bifidobacterium and Lactobacillus strains, 20-50 billion CFU, taken at bedtime).
20-30 minutes of walking, or light yoga or Pilates. Plus one stress-regulation practice a day: breathwork, a phone-free walk, journaling, or legs up the wall for 10 minutes.
Your gut is calmer and more predictable now. This week is about pushing variety while keeping the stability you have built.
Aim for 20-30 different plant foods across the week, not just volume, but variety. Rotate colours and types: parsley, coriander, basil, rocket, watercress, pumpkin seeds, walnuts, blueberries, citrus, turmeric, cinnamon. Each different plant feeds a different group of microbes.
Increase slowly and pay attention to your response. More chia and flax, oats at breakfast, cooked onion and garlic in dishes, small portions of lentils and chickpeas. Take fermented foods up to around 2 tbsp daily. Continue glutamine and probiotics throughout.
Start testing small portions of foods you removed, one at a time. Try raw fruit or veg, a small serving of lentils, a piece of sourdough, a little dairy. Observe symptoms for 24 hours before testing the next food.
This is not a permanent reset, it is how you carry the results forward, rebuild flexibility and make this sustainable for life.
If symptoms appear, pause that food, return to your base diet for 2-3 days, then test a different food. Do not rush this process, the information you gather is valuable.
Well tolerated, eat freely and regularly.
Fine in smaller portions or less frequently.
Triggers symptoms now. Revisit in 4-6 weeks, tolerance improves as gut health does.
30+ plant foods a week, regular spaced meals, thorough chewing, calm eating, daily movement, protected sleep. Repeat the full reset once or twice a year as maintenance, your gut will thank you for it.
All recipes are designed to fit the protocol. Click any to expand the full method, scale the servings up or down, and watch the ingredient quantities adjust live.
Tracking your symptoms each evening is how you spot what helps and what sets you off, the patterns only become clear once they are written down. Because this is personal health data that needs to follow you across the full 21 days and onto any device, you will need a free account to use the tracker. Your entries are saved securely to your account and are there every time you sign back in.
| Day | BMs | Stool | Bloat | Energy | Symptoms | Notes |
|---|
By the time you reach the end of this plan, the goal is that your digestive system feels calmer and more predictable. You will notice less bloating, more regular bowel movements and steadier energy. It is also very common for sleep, mood and mental clarity to improve once digestion settles.
But the real value of a plan like this is not just the few weeks you spend following it. It is what you learn from the process.
You start to notice how spacing meals changes digestion. You become more aware of how certain foods affect you. Small habits such as eating slowly, sitting down for meals, finishing dinner earlier in the evening suddenly start to make sense because you can feel the difference.
Life will always include travel, celebrations and the occasional late night, as it should. The aim is not perfection. The aim is to have a clear baseline you can return to when things feel a little off.
Be patient with your body as you go through it. Gut health rarely changes overnight, but it does respond to consistent, simple habits over time.
And once the system settles, most people are surprised by how much better they feel.