The Sourdough School

Centre of Research & Education in Nutrition & Digestibility of Bread & the Gut Microbiome

The bread that you eat every day has a powerful, influence on both your phyical and mental health. We teach a groundbreaking, evidence-based approach to bread to nourish your gut microbiome and support health. Our courses are open to wide range of people, including bakers and healthcare professionals to learn how to bake and eat beautiful bread as lifestyle medicine. "Vanessa’s work on sourdough and the gut microbiome is changing the way we think of food, health and baking.” - Tim Spector
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309 - ‘Rye bread improves bowel function and decreases the concentrations of some compounds that are putative colon cancer risk markers in middle-aged women and men’. The Journal of Nutrition. 130(9):2215-21

Reference Number: 309

Year: 2000

Authors: Grasten S.M. et al

Link: Link to original paper

Health: Cancer | Colorectal Cancer

Inclusions: Rye

Summary

Cereal fiber may reduce the risk of colorectal cancer by diluting colonic contents due to increased fecal output, by accelerating intestinal transit, by increasing fecal frequency and by altering bacterial metabolism. The effects of whole-meal rye bread on some putative colon cancer risk markers were investigated in 17 healthy Finnish subjects using a randomized crossover trial with two 4-wk bread consumption periods and a 4-wk washout period between the bread periods. White wheat bread was used as a control. Test breads covered a minimum of 20% of the daily energy intake (range, 4330-14, 033 kJ/d). Intestinal transit time, stool weight, fecal bacterial enzyme activities and short-chain fatty acid, ammonia, diacylglycerol (DAG) and bile acid concentrations in feces (expressed per gram wet feces) were measured. Whole-meal rye bread significantly increased fecal output and fecal frequency and shortened mean intestinal transit time compared with wheat bread in both women and men. Activities of beta-glucuronidase and beta-glucosidase (expressed per gram wet feces) were significantly lower in men and urease activity significantly higher in women during the rye bread period (RBP). Fecal butyrate concentration was higher during the RBP in men. Fecal ammonia and DAG concentrations did not differ between bread periods. Fecal total and secondary bile acid concentrations were significantly lower during RBP in both women and men. This study shows that whole-meal rye bread significantly improves bowel function in healthy adults and may decrease the concentration of some compounds that are putative colon cancer risk markers.

 

What does this mean for a Baker?

This is an important study as it provides us with an insight into the benefits of consuming rye bread on a regular basis. The study found that rye bread may help to reduce the risk of developing colorectal cancers. Why not try making this dark rye and treacle sourdough?  It may help to reduce your risk of developing colorectal cancer.

See our online learning course on The Sourdough Club

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.

THE GENDER GAP IN HEART DIAGNOSIS
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According to a report by the British Heart Foundation, more than 8,200 women died needlessly over a ten year period due to inequalities in the diagnosis and treatment of heart disease. Concerningly, women fare worse at every stage in their health journey for heart disease globally. 
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DID YOU KNOW?
-	Women get half as much heart attack treatment as men 
-	Women are 50% more likely to receive a wrong initial diagnosis than their male counterpart, increasing the risk of death by as much as 70%
-	Women are less likey than men to recieve standard treatments such as bypass surgery
We can and must do better, starting by tackling the false- and deadly- assumption that women are not at risk of heart attacks. In reality, women are twice as likely to die from coronary heart disease than breast cancer.
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🌾Whole Grain Consumption And Heart Disease Protection
There is a robust body of evidence that suggests whole grains can protect against coronary heart disease, alongside obesity and colorectal cancer.
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❤️ According to a senior dietician at the British Heart Foundation: "Eating more whole grains is a simple change we can make to improve our diet and help lower our risk of heart and circulatory disease." Opting for wholemeal or granary in favour of refined white bread is a simple, effective way to increase your whole grain and fibre intake. #hearthealth #healthyheart #wholegrain #feedthecells #lifestylemedice #bake2give1 #wholegrainbread #internationalwomensday
A NEW APPROACH

👉🏻 For the past 3 years we’ve been working on something incredible … prescription sourdough bread making courses for our @sourdoughclub members 

📈We have had amazing advances in healthcare, but there is no pill to cure poor diet. The best medicine is prevention via a healthy lifestyle, and many studies have shown that people who eat healthily and exercise regularly sleep better, have less anxiety and depression, have more energy, and lower their risk of chronic illness overall.

🙌 Vanessa’s work on Bread & the Impact on the Gut Microbiome has been turned into something extraordinary. Prescription bread-making courses as a lifestyle intervention, and the Bread Protocol we teach here is designed to address the way you live, exploring behaviour related to nutrition, physical activity, stress management, sleep, social support and environmental exposures. These courses are 12 weeks long, and designed to maintain health and prevent disease not just in individuals bit in patients and populations, so we have 2 ways to enrol on a course: 

1️⃣ SOCIAL PRESCRIPTION 
If your doctor or healthcare practitioner is one of  our Sourdough School graduates and they feel that this bread-making prescription course is something that will improve your health, then they may can prescribe the course for you as a social prescription free.

2️⃣ SELF PRESCRIPTION 
You can self-prescribe these courses by enrolling yourself on a course to improve your health and wellbeing.

📰 If you are interested in learning more about the prescription courses then please sign up to the newsletters as we will be announcing their launch over the coming weeks and months. 

@vanessakimbell
@drmiguelmateas 
@dralexdavidson 
@dksherratt 

#lifestylemedicine #preventativemedicine #systemschange #socialprescribingday #socialprescribing
IN 2016 WE TESTED BLOOD SUGAR RESPONSE TO OUR PUMP IN 2016 WE TESTED BLOOD SUGAR RESPONSE TO OUR PUMPKIN SOURDOUGH IN THE  CLASSES

Our students measured their responses throughout the #breadandguts #sourdoughschool & @vanessakimbell wrote the recipe up in her bestselling Sourdough School book.

✨ So good to read that a recent 2021 study on Glycaemic and Appetite Suppression Effect of a Vegetable-Enriched Bread ( mentioned by @theguthealthdoctor today see last slide ) where researchers looked at the impacts of veg-enriched bread compared to  commercial white bread and commercial brown bread on the insulin levels of people participating. 

The results showed that when the participants ate the veg bread they reported feeling more satiation versus when they ate the white or brown bread. 

👆🏼They also experienced a lower insulin response with the vegetable bread. 
essentially translating this science into practice before it was trendy 😂👆🏼👍

This image is taken from the @sourdoughschool book by @vanessakimbell, produced by @kylebooksuk, with photography by @nassimarothacker, styled by @season_adam & with foreword by @richardhartbaker
DID YOU KNOW WE HAVE AN ONLINE SHOP & CAN PURCHASE DID YOU KNOW WE HAVE AN ONLINE SHOP & CAN PURCHASE MY WHITE SOURDOUGH STARTER?
(with worldwide delivery)
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I have several sourdough starters but The French white starter is one that I have been using since I was 11 years old and originates in the bakery I grew up baking within France. It takes a bit longer to reach it’s peak and is generally slower and sweeter, and much more forgiving of being neglected for a week, so the one I recommend for beginners. ⠀⠀⠀⠀⠀⠀⠀⠀⠀
We have verbal confirmation that the starter originated over 115 years ago and If you swipe right in the video you can listen to me chatting to one of the older residents of the village confirming that bakery did not shut during the war either .. & it has been maintained ever since... it’s a lovely story. Although the microbes double every 20 – 30 minutes when they are refreshed ... so it is either over a century old or 30 minutes old depending on how you want to look at it. ⠀⠀⠀⠀⠀⠀⠀⠀⠀
You can purchase a pot of my starter, along with a grey moon kilner jar & a mini video course on looking after your starter. 
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TAP THE PICTURE TO SHOP.
 
Swipe right to see the amazing video of the French bakery where the starter originated from @vanessakimbell has been baking with this starter for over 20 years … and first baked almost 40 years ago with it …#romantic 
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#breadbosses #breadporn #flourwatersalt #breadtalk #bread #breadstagram #sourdough #sourdoughschool #bread #sourdoughlove #sourdoughlover #naturalleavened #leavening #levain #realbread #breadmaking #bakebread #makebread #makerealbread #learntobakebread #breadmakingclass #sourdoughstories #bakingforlove #bakingtherapy #sourdoughbaking #bannetons #bakery
UNDERSTANDING SOURDOUGH … starts, not in the bak UNDERSTANDING SOURDOUGH …
starts, not in the bakery, but in the soil.
#sourdough
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