Gut health — the functional-nutrition lens and the dental connection most clinics miss
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Last Updated
October 1, 2026
Why the gut rarely acts alone.
Gut health describes how well your digestive system works, from comfortable digestion and regular transit to a balanced microbiome. What helps is ruling out medical causes with your GP first, then steady changes to diet, eating patterns, sleep and stress. At our Islington clinic, nutritional therapy leads the work, with dental hygiene and Ayurvedic perspectives where relevant.
Visible Signs & Symptoms
What we mean by gut health
Gut health is a broad term for how well your digestive system works: how you break down and absorb food, how regular and comfortable your digestion is, and the balance of the microbes that live in your gut, often called the microbiome. Research linking the gut to immunity, inflammation and mood is real and growing, but it is still developing, and gut health is not a diagnosis in itself. It is a way of describing a set of patterns that are worth understanding properly.
Common digestive signs
- Persistent or frequent bloating and abdominal discomfort
- Irregular or unpredictable bowel habits, constipation or loose stools
- Feeling heavy, tired or sluggish after meals
- Reactions to particular foods
- Wind, reflux or indigestion
- Symptoms that follow a pattern often described as IBS-type
Less obvious signs
Digestion does not work in isolation, and some people notice changes elsewhere that seem to move with their digestive symptoms:
- Low energy and difficulty concentrating, sometimes described as brain fog
- Low mood, especially during stressful periods
- Skin flares such as adult acne or eczema
- Changes in the mouth, including recurrent gum inflammation, a dry mouth or enamel wear associated with reflux
No single sign confirms a gut problem, and many have other causes. That is why a careful history and, where needed, medical investigation matter more than a symptom checklist. It also helps to notice patterns: when symptoms appear, what seems to ease or worsen them, and how they track with sleep, stress and your cycle. If your symptoms are new, persistent or changing, your GP should be your first stop.
Clinical Root Causes
Why digestion becomes unsettled
Digestive symptoms usually have more than one contributing factor. Common ones include:
- Diet and eating patterns. Low fibre intake, a narrow range of plant foods, irregular meals, eating quickly or late, and heavily processed food can all affect comfort and regularity.
- Stress and the nervous system. The gut and brain are in constant communication. Sustained stress can change how quickly the gut moves and how sensitive it is, which is why many people find their digestion is worst during demanding weeks.
- Sleep. Short or broken sleep affects appetite, food choices and how the gut behaves.
- Changes to the microbiome. Illness, a course of antibiotics, travel and dietary shifts can all change the balance of gut microbes, at least for a time.
- Hormonal change. Many people notice digestive changes around the menstrual cycle and during perimenopause.
- Movement and hydration. Low activity and not drinking enough water can contribute to sluggish transit.
The mouth as the start of digestion
Digestion begins in the mouth, and the oral and gut microbiomes are connected. Research links long-standing gum inflammation with the body’s wider inflammatory load, and acid reflux can erode enamel and contribute to sensitive teeth. Mouth-breathing dries the mouth and can change the oral environment. These connections are an active area of study rather than settled cause and effect, but they are a sensible reason to look at the mouth and the gut together.
Medical causes to rule out
Some digestive symptoms come from conditions that need medical diagnosis and treatment, such as coeliac disease, inflammatory bowel disease, infections, thyroid problems or, less commonly, bowel cancer. IBS is a diagnosis your GP makes after ruling out other causes. You may also see “leaky gut syndrome” described online; intestinal permeability is a genuine research area, but leaky gut syndrome is not an established medical diagnosis, and we do not treat it as one.
Why an integrative clinic looks at the gut differently
Ongoing digestive discomfort is more than an inconvenience. It can affect energy, sleep, concentration, confidence about eating out and, over time, mood. People sometimes respond by cutting out more and more foods without guidance, which can narrow the diet, reduce nutrient intake and make eating a source of anxiety. Leaving symptoms unexamined also risks missing a medical cause that would benefit from proper treatment.
When to see your GP first
Diagnosis and medical treatment of digestive conditions, including tests, medication and specialist referral, come from your GP or a gastroenterologist. Please see your GP before starting any nutritional work if you have:
- Unexplained weight loss
- Blood in your stool, or black, tarry stools
- A persistent change in bowel habit
- Difficulty swallowing, or food sticking
- Persistent or severe abdominal pain, or symptoms that are getting worse
- Ongoing tiredness that could suggest anaemia
- A family history of bowel cancer, coeliac disease or inflammatory bowel disease
Red flags: get help now
- Call 999 or go to A&E for severe abdominal pain, vomiting blood, heavy bleeding from the bottom, or chest pain.
- For urgent advice when it is not an emergency, call NHS 111.
Nutritional and integrative support at our clinic works alongside your GP and any investigations. It does not diagnose disease or replace medical care.
How the integrative team works together on the gut
Our approach to gut health at Dental & Wellness London in Islington is consultation-first and deliberately unhurried. We aim for the least intervention that is likely to help, built on food and daily habits, and we work alongside your GP throughout.
If you have mild or recent symptoms
Often the most useful first step is a structured look at how and what you eat. Nutritional therapy with Nicoletta Peloni (mGNC, mANP) begins with a 90-minute session covering your history, current diet, digestion, sleep, stress and any medical results you already have. You leave with a practical, individual plan: usually changes to meal timing, fibre and plant variety, hydration and eating pace, rather than a long list of banned foods. We do not recommend restrictive elimination diets as a default, and we do not start from supplements. Some people also explore naturopathy for a wider view of diet and routine.
If you have a GP diagnosis such as IBS
Once medical causes have been investigated, nutritional therapy can support you in living with IBS-type symptoms through structured dietary changes, guided reintroduction where any foods have been reduced, and attention to the stress dimension. Digestive symptoms can also shift during hormonal change, as our perimenopause care page describes. Any medication remains with your GP.
If stress is clearly part of the picture
Where digestion flares with pressure, we may suggest somatic coaching and mindfulness with Laura-Maria Schober (MSc, EMCC) to practise slower breathing and settling, alongside the dietary work. Our page on chronic stress and burnout explains this connection further. Digestion can also change after childbirth; see postpartum recovery.
If your gums or teeth are involved
For people with digestive symptoms and bleeding or inflamed gums, we can coordinate nutritional work with professional hygiene care and a dental assessment. See also gum disease and bleeding gums. If reflux is affecting your enamel, a dentist can assess and protect the teeth.
If you would value an Ayurvedic perspective
Dr Reena Sohal offers Ayurvedic consultations focused on digestion, daily routine and food, as a complementary lens alongside nutritional therapy. Our page on the Ayurvedic doctor in London describes the approach in more detail.
What we do not do
We do not offer diagnostic gut tests, sell fixed “reset” protocols or recommend supplements as a matter of course. Where a specific nutritional need is suspected, we discuss it openly and, if it needs testing or treatment, involve your GP. Our role is practical, evidence-informed support with food and habits, not a replacement for medical investigation.
How we choose with you
We start with what matters most to you, check that any warning signs have been seen by your GP, and agree one clear starting point. With your consent, practitioners share notes so the work joins up. Change is gradual, often over weeks to months, and responses vary; we will not promise a result.
Cost
- Free 20-minute discovery call by phone
- Nutritionist session (90 minutes): £75
- Ayurvedic consultation: £75; Ayurvedic review appointment: £50
- Hygiene appointment (30 minutes): £85
- Dental examination: £65
Getting here. We are at 222 Essex Road, Islington, N1 3AP, about two minutes from Essex Road station. Buses 38, 56, 73, 341 and 476 stop on Essex Road, and many patients cycle or arrive by Lime or Forest e-bike.
Further reading
Nutritional therapy in London — clinical food-as-medicine practice
Clinical food-as-medicine practice with Nicoletta Peloni — registered nutritional therapist working alongside dental and integrative care under one roof.
Functional medicine in London — root-cause, systems-based care, delivered honestly
Root-cause, systems-based care through nutritional therapy, naturopathy, Ayurveda, and somatic work — coordinated under one roof, alongside your GP.
If your question isn't here, call reception on 020 8127 4567 or book a free discovery call.Text Link
View all FAQs →What are the signs of poor gut health?
Persistent bloating, irregular or unpredictable transit, food sensitivities, low energy after eating, and IBS-pattern discomfort. Less obviously, adult acne or eczema flares, low mood and brain fog, and oral signs such as recurrent inflammation.
Can gut health affect my teeth and gums?
Yes — digestion starts in the mouth, and the oral and gut microbiomes are linked, with chronic gum inflammation contributing to the body's overall inflammatory load. Acid reflux can also erode tooth enamel.
How long does gut healing take?
Think in months, not days. Early dietary changes often ease symptoms within a few weeks; rebuilding a more resilient pattern is usually a three-to-six-month piece of work, and longstanding issues can take longer.
Do I need to take supplements for gut health?
Not necessarily. The approach is the minimum effective intervention — dietary foundation first, supplements only where there's a specific identified need, and no default restriction for its own sake.
Can nutritional therapy help IBS?
Nutritional therapy can support people living with IBS-pattern symptoms, but IBS is a clinical diagnosis your GP makes after ruling out other causes. The right sequence is medical investigation first, then structured nutritional support alongside it.
Should I see my GP first for gut symptoms?
For certain signs, always — unexplained weight loss, blood in the stool, persistent severe or changing symptoms, difficulty swallowing, or a family history of inflammatory bowel disease. Integrative gut care runs alongside your GP, never instead of medical care.
Is "leaky gut" real?
Intestinal permeability is a genuine area of research. "Leaky gut syndrome" as a catch-all diagnosis sold with a fixed protocol is not an established medical condition, and we won't frame it as one.
Do I need a "gut health specialist", and is that a regulated title?
"Gut health specialist" is a descriptive term, not a protected medical title in the UK. What matters is the qualification behind it — at DWL the gut work is led by a registered nutritional therapist, alongside Ayurvedic consultations with Dr Reena Sohal.
