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The Spleen is the official of transformation and transport; it extracts the essence of food to nourish the five organs and six bowels.

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Digestion: Where TCM and Science Converge

More than 40% of the Western population suffers from chronic digestive disorders. Reflux, bloating, irritable bowel syndrome, constipation - these everyday complaints frequently resist conventional approaches. The reason is not difficult to identify: Western medicine long treated the intestine as a simple tube, overlooking the energetic and systemic dimensions that traditional Chinese medicine (TCM) has explored for two millennia.

Then, in the 2000s, a scientific revolution emerged: the discovery of the gut microbiome and its 100 trillion bacteria. Researchers began speaking of a ‘second brain’, the gut-brain axis, and neurotransmitters produced in the intestine.

TCM had understood all of this for 2,000 years.

This guide presents the most fruitful alliance between two systems of medicine: an integrative approach in which each tradition contributes what the other cannot offer alone. For a comprehensive exploration with protocols, clinical tables and case studies, see the reference work Digestion: The TCM & Science Alliance.

The 7 Bridges Between TCM and Digestive Science

The strength of this alliance rests on precise correspondences between TCM concepts and scientific discoveries. Each bridge opens a new therapeutic pathway.

Principle	TCM	Science	TCM - Science Bridge	Physiological Alliance	Satellite Articles
Gut microbiome	Spleen Qi	Dysbiosis	Bacterial ecosystem = transformative energy	Spleen Qi Deficiency = intestinal dysbiosis	Microbiome & Spleen Qi
Intestinal permeability	Dampness	Leaky Gut	Loose tight junctions = Dampness seeping through	Endotoxins in the blood = Heat-Dampness	Leaky Gut & Dampness
Gut-brain axis	Yi (Thought)	Vagus nerve	Intestinal serotonin (95%) = Spleen governs Thought	Dysbiosis = anxiety, rumination injures the Spleen	Gut-Brain Axis
FODMAPs	Spleen Dampness	Fermentable	Sticky foods = Dampness production	Fermentation = Phlegm obstructing	FODMAPs & Dampness
Hypochlorhydria	Yang Deficiency	Low gastric acid	Digestive fire extinguished = pH > 3.5	Low acidity = food stagnating and fermenting	Hypochlorhydria & Yang Deficiency
Digestive enzymes	Spleen Yang	Enzyme deficit	Catalysts = transforming fire	Maldigestion = incomplete transformation	Enzymes & Digestive Fire
Intolerances (gluten, casein)	Phlegm (Tan)	Immune reaction	Accumulated mucus = opioid peptides	Chronic inflammation = Phlegm obstructing the Heart	Intolerances & Phlegm

After Digestion: The TCM & Science Alliance, L. Dumay, 2026

The 7 satellite articles explore each bridge in depth, with protocols, clinical tables and case studies:

• Microbiome and Spleen Qi - A fascinating parallel
• Leaky Gut and Dampness - Intestinal permeability through two lenses
• The Gut-Brain Axis - The second brain as understood by TCM
• FODMAPs and Spleen Dampness - The integrative protocol
• Hypochlorhydria and Yang Deficiency - Reigniting the Digestive Fire
• Digestive Enzymes and Digestive Fire - When Yang diminishes
• Food Intolerances and Phlegm - Gluten, casein and Phlegm

Why the Dual Approach Changes Everything

Conventional medicine addresses symptoms. TCM addresses patterns. Integrative medicine does both - and goes further than either system can manage alone.

What TCM Contributes to Science

• A systemic perspective: the intestine is not isolated; it is connected to the Liver, the Heart, and the emotions
• Subtle diagnostic tools: the tongue, pulse, and clinical signs reveal imbalances before biomarkers detect them
• 2,000 years of clinical observation: the TCM classics document digestive patterns that science is only now rediscovering
• Diet as primary medicine: food is the first remedy

What Science Contributes to TCM

• Evidence-based validation: randomised trials confirm what practitioners observe
• Molecular understanding: why does ginger tonify Spleen Yang? Because it accelerates gastric emptying (Lohsiriwat et al., 2010)
• Objective measurement tools: calprotectin, CRP, zonulin, lactulose/mannitol permeability
• Adaptation to Western realities: FODMAPs, gluten, industrialised diet

The 4 Cross-Referenced Digestive Profiles

One of the book’s major contributions is the mapping of TCM clinical profiles onto scientific diagnoses. Here are the four principal profiles.

Aliment	Nature	Saveur	Méridiens	Actions	Précautions
Cold/Deficiency Profile	Cold	Pallor, fatigue, loose stools	Spleen Yang Deficiency	Hypochlorhydria, low enzyme secretion	Warm and tonify Yang
Dampness Profile	Damp	Bloating, sticky stools, thick tongue coat	Spleen Dampness / Phlegm	Dysbiosis, candidiasis, SIBO	Drain Dampness, restore the microbiome
Stagnation Profile	Tense	Pain, reflux, irritability	Liver Qi Stagnation	Vagal dysfunction, chronic stress	Move Qi, activate the vagus
Heat Profile	Hot	Burning, thirst, foul stools	Heat-Dampness	Intestinal inflammation, endotoxaemia	Clear Heat, repair the barrier

Integrative classification - After L. Dumay, 2026

The 8-Week Repair Protocol: An Overview

The book’s flagship protocol combines TCM principles and scientific findings across three successive phases.

Phase 1: Detox (Weeks 1-3)

• TCM: Eliminate Dampness and Phlegm, move the Qi
• Science: Remove triggering FODMAPs, rest the mucosa
• Actions: Bone broth, warm cooked foods, thorough chewing

Phase 2: Repair (Weeks 4-6)

• TCM: Tonify Spleen Qi and Yang, nourish the Spleen
• Science: Repair tight junctions, restore microbiome diversity
• Actions: L-Glutamine, prebiotic fibres, lacto-fermentation, Astragalus (黄芪 Huáng Qi)

Phase 3: Strengthening (Weeks 7-8)

• TCM: Consolidate the Spleen, prevent recurrence
• Science: Progressive FODMAP reintroduction, microbiome diversification
• Actions: Phased food reintroduction, breathing exercises, digestive chronobiology

The Shared Dietary Pillars

When TCM and modern science agree, certain dietary principles become indispensable. These pillars are validated by both traditions - a remarkable convergence worth noting.

Aliment	Nature	Saveur	Méridiens	Actions	Précautions
Eat warm food	TCM	Enzymatic conservation	Preserves Spleen Yang	Reduces digestive energy expenditure	Avoid ice cream, cold drinks, excess raw food
Chew thoroughly	TCM	Mechanical pre-digestion	The Spleen favours slowness	Salivary amylase, satiety signalling	20-30 chews per mouthful
Regular meal timing	TCM	Digestive chronobiology	Spleen strongest in the morning, weakest in the evening	Cortisol and digestive enzymes follow a circadian rhythm	Main meal at midday, light evening meal
Cook vegetables	TCM	Nutrient bioavailability	The Spleen fears Cold and Dampness	Cooking breaks down cell walls (fibres)	Cooked vegetables, soups, broths

Herbal Medicine and Micronutrition: Synergies

One of the book’s most original chapters explores the synergies between Chinese herbal medicine and Western micronutrition. Here is an overview of the most effective combinations.

FAQ: Your Questions on Integrative Digestion

How do I know whether my complaints reflect Spleen Qi Deficiency or dysbiosis?

Observe your key signs: post-meal fatigue, loose stools and a pale tongue frequently indicate Spleen Qi Deficiency, whereas abdominal distension, fermentation and a history of antibiotic use suggest dysbiosis. The integrative approach combines TCM observation with biomarkers (CRP, calprotectin) for reliable differential assessment. Explore the parallel

Can I follow the protocols whilst on medical treatment?

Yes, provided you work with a TCM practitioner or healthcare professional. Each TCM protocol is accompanied by scientific indications, precautions and lists of possible interactions (anticoagulants, antacids, hypoglycaemic agents) to allow recommendations to be adapted without interfering with your treatment.

How long before I notice improvement?

Patients report an average of 30% symptom improvement within the first four weeks (Detox and Repair phases). The most sustained results emerge between weeks 8 and 12, when dietary protocols, breathing exercises and fasting approaches adapted to your syndrome are applied consistently. See the full protocol

Why are FODMAPs a problem in TCM terms?

FODMAPs are fermentable sugars that feed certain gut bacteria excessively. In TCM, they correspond to foods that generate Dampness and weaken the Spleen. Fermentation produces gases and toxins - precisely what TCM describes as the accumulation of Dampness-Phlegm. Understand the FODMAP-Dampness link

What is the ‘second brain’ in TCM?

Modern science has established that the intestine produces 95% of the body’s serotonin and communicates with the brain via the vagus nerve. TCM has described this connection for two millennia: the Spleen governs Thought (意 Yi), and excessive mental rumination injures the Spleen. Both traditions describe the same bidirectional phenomenon. Explore the gut-brain axis

Going Further: The Complete Collection

This guide only touches on the depth of the TCM & Science alliance. Each subject warrants full development with protocols, clinical correspondence tables, therapeutic recipes and commented case studies.

The 9 satellite articles in this cluster explore each bridge between TCM and science:

• Microbiome and Spleen Qi - A fascinating parallel
• Leaky Gut and Dampness - Intestinal permeability through two lenses
• The Gut-Brain Axis - The second brain as understood by TCM
• FODMAPs and Spleen Dampness - The integrative protocol
• Hypochlorhydria and Yang Deficiency - Reigniting the Digestive Fire
• Intestinal Repair in 8 Weeks - The TCM & Science protocol
• Digestive Enzymes and Digestive Fire - When Yang diminishes
• Herbal Medicine and Micronutrition - Synergies for digestion
• Food Intolerances and Phlegm - Gluten, casein and Phlegm

For the complete approach with all protocols, Zang-Fu correspondence tables, therapeutic recipes and commented clinical cases:

Order the book Digestion: The TCM & Science Alliance