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Sourdough for Health

Internationally recognised as a leading authority on bread nutrition and digestibility, Dr Vanessa Kimbell holds a doctorate in Baking as Lifestyle Medicine and preventative healthcare.

Have you ever wondered why some breads make you feel tired, foggy and achy — or been puzzled that some leave you bloated while others don’t? If you can eat sourdough but not other bread, these articles and recipes are a great place to spark curiosity: learn how bread interacts with the gut microbiome, discover how your unique nutrigenetics shape your response, and read practical, evidence-based guidance. Cutting through the nonsense with clear, useful explanations, Vanessa shares tips, information, advice, recipes and methods to bake, eat and share healthy bread to support digestion and overall health. You can read more about training in personalising bread at The Sourdough School, or book a 1:1 meeting to get your bread personalised.

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Cytokines: how immune messengers influence health and digestion

Immune signalling cytokines are small proteins that act as chemical messengers in the body. They carry messages between cells in the immune system and help to regulate inflammation and immune responses. We use the term immune signalling cytokines to describe their role in coordinating how cells communicate and act, especially in the gut.

What immune signalling cytokines are

Cytokines are released by immune cells to trigger or regulate other cells’ actions. They include interleukins and interferons, which help maintain a balanced immune response. Understanding these processes connects directly to how fermentation shapes the microbial environment in bread, influencing digestion and gut health.

Why cytokines matter for gut health

In the digestive system, cytokines guide immune responses to both beneficial and harmful microbes. Their signals help preserve the gut lining and maintain a stable gut microbiome. Consistent fermentation practices, such as those we demonstrate in our workshops through the Proven™ Bread subscription, encourage metabolites that interact positively with immune pathways, supporting nutrient bioavailability and fibre digestion.

Opinel Bread Knife

Links to digestion and wellbeing

Cytokines are central to both pro-inflammatory and regulatory immune responses. This means they can influence conditions like IBS or digestive sensitivities. In our diploma courses, we explore how personalised approaches to bread making, including fermentation time and sourdough hydration, can modulate the gut environment and help support immune balance.

Take a look at our courses at The Sourdough School

All reasonable care is taken when writing about health aspects of bread, but the information it contains is not intended to take the place of treatment by a qualified medical practitioner. You must seek professional advice if you are in any doubt about any medical condition. Any application of the ideas and information contained on this website is at the reader's sole discretion and risk.

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Todays live for diploma students will be on 'How t Todays live for diploma students will be on 'How to engage your patient in the lifestyle changes of the BALM' with @vanessakimbell 

In their 6pm live session, we help keep our students on track with the syllabus and discuss the application of Baking As Lifestyle Medicine to the 6 pillars of Lifestyle medicine, applying the research papers, application of the Research, and how this ties into prescribing, along with guest lecturers, discussions and sharing knowledge.

#lifestylemedicine #health #functionalmedicine #nutrition #integrativemedicine #healthylifestyle #wellness #lifestyle #rcgp #dietitian #nutritionist #healthcareprofessional #holistichealth #healthyliving #plantbased #guthealth #naturopathicmedicine #selfcare #functionalnutrition  #naturopathicdoctor #foodasmedicine #foodismedicine #lifestylegoals #cpd #lifestylechange #mentalhealth #sourdough #sourdoughschool #bakeforhealth
BAKE, ANALYSE, EAT; RECALIBRATE & REPEAT. 📆 The S BAKE, ANALYSE, EAT; RECALIBRATE & REPEAT.

📆 The Sourdough School Clinic - Thursdays 8pm - for students of The Sourdough School 

✏️ In this weekly live session, we cover technical baking questions. Students can submit their Baking Record Sheets in advance of the session.

📋 We look at the details of our student's bakes - the specifics of the flour, timings and temperatures. Using our sourdough record sheets Vanessa will make suggestions on how they might modify, or recalibrate the next time they bake.

Follow the link in the bio to learn more about becoming a student at The Sourdough School 👆

#sourdough #sourdoughschool #bread #sourdoughlove #sourdoughlover #naturalleavened #leavening #levain #realbread #breadmaking #bakebread #makebread #makerealbread #learntobakebread #breadmakingclass #sourdoughstories #bakingforlove #bakingtherapy #sourdoughbaking
IBS AWARENESS MONTH Do you suffer from irritable IBS AWARENESS MONTH

Do you suffer from irritable bowel syndrome (IBS)? It can be tough to deal with the uncomfortable symptoms of stomach cramps, constipation, diarrhoea and bloating. But did you know that making dietary changes, such as incorporating sourdough bread into your diet, could help alleviate some of those symptoms?

Studies have shown that sourdough's long, slow fermentation process can reduce IBS symptoms. Plus, during #ibsawarenessmonth, we're exploring how adding different herbs and spices to your sourdough can further improve both the flavour and the digestion of your bread.

Let's talk about gut health, fermentation, and how sourdough can be a delicious and healthy addition to your diet. Join the conversation and share your experiences with IBS and sourdough.

#guthealth #healyourgut #healthygut #guthealing #guthealthmatters #letfoodbethymedicine #foodasmedicine #gutbrainconnection #nutrientdense #micronutrients #digestivehealth #nutritionfacts #microbiome #breadandguts #ibsawarenessmonth
THE SOURDOUGH SCHOOL – HAND CARVED WOODEN LAME On THE SOURDOUGH SCHOOL – HAND CARVED WOODEN LAME

One of the biggest issues around using a plastic lame to score sourdough, of course, is that eventually the blade will become blunt and the lame could end up in landfill.  So several years ago I talked to my dear friend EJ about developing a lame with a replaceable blade. And he came up with this very beautiful hand carved wooden lame.

Very sadly EJ is no longer with us. Recently a friend of EJ’s who is also a wood turner and carver offered to make these again for us in remembrance of our dear friend.

Follow the link in the bio to our shop where you can find our full selection of wooden sourdough tools 👆

#sourdough #sourdoughschool #bread #sourdoughlove #sourdoughlover #naturalleavened #leavening #levain #realbread #breadmaking #bakebread #makebread #makerealbread #learntobakebread #breadmakingclass #sourdoughstories #bakingforlove #bakingtherapy #sourdoughbaking
The Baking As Lifestyle Medicine (BALM) Protocol The Baking As Lifestyle Medicine (BALM) Protocol

The current food system is broken at multiple levels, from the pesticides used in our soils to the emulsifiers and additives adulterating industrially-processed foods. Nowhere is this more apparent than in the bread we eat.  The figures reported by the UK Flour Millers say that bread is bought by a staggering “99.8% of British households” and that “the equivalent of nearly 11 million loaves are sold each day. Approximately 60-70% of the bread we eat is white and sandwiches are thought to account for 50% of overall bread consumption. Average bread purchases are the equivalent of 60.3 loaves per person per year.” 

Most bread sold is made by modern processing methods that strip heart-healthy whole grains of their nutrient contents, resulting in low-fibre bread with a high glycemic index. Over time, white processed bread can increase a person’s risk of insulin resistance alongside other lifestyle diseases.

We’re on a mission to revolutionise the bread making process at every level – from soil to slice. The rules governing this are laid out in our Baking As Lifestyle Medicine protocol. 

#lifestylemedicine #health #functionalmedicine #nutrition #integrativemedicine #healthylifestyle #wellness #lifestyle #rcgp #dietitian #nutritionist #healthcareprofessional #holistichealth #healthyliving #plantbased #guthealth #naturopathicmedicine #selfcare #functionalnutrition  #naturopathicdoctor #foodasmedicine #foodismedicine #lifestylegoals #cpd #lifestylechange #mentalhealth #sourdough #sourdoughschool #bakeforhealth
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