The Sourdough School

BALM – Proven as one of the healthiest approaches to bread in the world.

Discover how Baking as Lifestyle Medicine can transform your gut and mental health—through bread. Based in the walled gardens of Dr. Vanessa Kimbell’s beautiful Victorian home in rural Northamptonshire, UK, we teach individuals, bakers, and healthcare professionals to bake Proven Bread. Developed by Dr. Kimbell—widely recognised as a global authority on bread and health—this functional nutrition approach uses nutrigenetics to personalise each loaf for optimal health.

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PROVEN BREAD DELIVERED TO YOUR DOOR

Proven Bread — More Than Just Bread

Subscribe to receive freshly baked, handcrafted loaves delivered to your door —this will be the healthiest bread you’ve ever eaten.

Developed by Dr Vanessa Kimbell through her doctoral research, Proven Bread is made using the BALM Protocol, with over 30 plant-based ingredients: regeneratively grown grains, legumes, seeds, and botanicals. The flour is hand-blended, stone-milled, and never synthetically fortified.

Each loaf is slow-fermented for 18 hours using a live culture, improving digestibility and nutrient bioavailability. With 6g of fibre per slice, this bread is designed to support digestive health, stabilise blood sugar, and enhance satiety — this is bread as functional food, often referred to by as a clinical bread because of the high polyphenols, fibre and high levels of micronutrients in the formulas. 

But this isn’t just about the bread – it’s about empowerment. You begin with our 12-week Proven Programme — a structured education in how to eat bread for health and how to connect to your gut, the soil and your community.  After completing this can you continue with a bread-only subscription — because understanding nourishing bread and knowing how to eat bread is as important as eating it.

3 Options to subscribe to our bread Autumn Term Bread  delivery Programme below

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  • Sale! Proven Bread ™  UK Bronze Subscription  - Lessons & Loaves Posted to Your Door

    Proven Bread ™ UK Bronze Subscription – Lessons & Loaves Posted to Your Door

    From: £59.99 / month for 3 months + £9.99 registration fee
    Autumn Bread Subscription
    Our Basic Subscription
    Select options This product has multiple variants. The options may be chosen on the product page
  • Sale! Proven Bread ™  UK Gold Subscription Loaves Posted to Your Door + 1:1 with Dr Kimbell & 3 Live Group Sessions

    Proven Bread ™ UK Gold Subscription Loaves Posted to Your Door + 1:1 with Dr Kimbell & 3 Live Group Sessions

    From: £69.00 / month for 3 months + £299.00 registration fee
    Autumn Bread Subscription
    Our Most Personalised
    Select options This product has multiple variants. The options may be chosen on the product page
  • Sale! Proven Bread ™  UK Silver Subscription  - Lessons & 3 Live Sessions with Loaves Posted to Your Door

    Proven Bread ™ UK Silver Subscription – Lessons & 3 Live Sessions with Loaves Posted to Your Door

    From: £69.99 / month for 3 months + £4.99 registration fee
    Autumn Bread Subscription
    Best Value for Money
    Select options This product has multiple variants. The options may be chosen on the product page
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