The Glucose Never Lies®
Independent T1D education.
Built on evidence.
Grounded in lived experience.
A diabetes educational advisor, built by a team with skin in the game.
Grace gets you 80% of the way there with 20% of the effort; the final 20% takes self-discovery, guided by human expertise and trial-and-error learning.
AI education expertise from leading professors in AI and education; we learn by research and by application.
Validation dataset: Cockpit 1.0/daily dataset, Syno by Syntactiq Dynamics FlexCo (syntactiq.ai).
Learn with Grace
Learn diabetes with Grace. Free, long enough to actually learn it.
This is not a place for easy answers, and it is not here for CPD points. Diabetes is a Black Swan condition: high uncertainty, where the headline number rarely fits the person in front of you. Grace teaches you to think differently about risk and insulin, to see through the marketing tricks and call rubbish what it is, and to know you are not the average of the research. These are not only diabetes lessons; in a world of faster tech, AI, and neomania, learning to weigh evidence and not be fooled by randomness serves you for life. Grace teaches diabetes, and also how to live, laugh, love, and keep your head.
Friendly and plain, jargon defined on first use. The building blocks, done properly.
Evidence-honest, strong convictions loosely held. Where most people settle.
Critical appraisal out loud, the funding lines, what would change your mind.
Free for 90 days if you live with type 1 diabetes, free for 30 days for healthcare professionals; long enough to learn diabetes for free. After that the HCP licence and Grace Max are to be confirmed. Donations keep Grace free for the people who need it, GBP 5 to 55 a slot, matched pound for pound. We only teach what we use ourselves, give our own family, and give the people we love.
The philosophy
The 20% that changes everything.
Decades of diabetes education has added complexity. More variables. More rules. More anxiety. GNL does the opposite.
We identified the handful of things (insulin on board, glucose trend, starting glucose, therapy type) that explain the vast majority of glucose outcomes. We built everything around those. We removed the rest.
Every guide, every explorer, every podcast episode, and every answer Grace gives follows the same principle: major in the majors. If it does not change the outcome, it does not get airtime.
“Remove what is unnecessary. Own what remains. Build from there.” (Via Negativa)
The trade is honest: GNL chooses depth in a few things over coverage of everything. If a guide does not change how you read a CGM trace or hold a conversation with your team, it does not get airtime.
How to use GNL
Start with Grace. Go as deep as you want.
Your diabetes education adviser
GNL Grace
Tell Grace what you want to know about. She searches every guide, every podcast episode, and a research engine spanning thousands of clinical papers, then answers in language that fits your background, your device, and your situation.
Ask Grace where to start →Or explore on your own:
The essential building blocks: insulin, carbohydrate, activity, CGM, and glucose patterns.
Use your own numbers. Seven interactive tools covering exercise, AID systems, hypo and hyper treatment, alcohol, and more.
Go deeper. In-depth guides on IOB, CGM technology, AID systems, exercise physiology.
The platform
Everything GNL has built, in one place
The essential building blocks of type 1 diabetes: insulin, carbohydrate, activity, CGM, and glucose patterns. The framework the rest of GNL builds on.
Start with Foundations →Seven interactive tools covering AID systems, exercise planning, exercise carbohydrate, activity timing, hypo and hyper treatment, and alcohol. Use your own numbers.
Open the Explorers →In-depth guides covering insulin on board, CGM technology, AID systems, exercise physiology, and more. Each guide invites you to test it against your own data.
Browse the Guides →Ask Grace anything. She searches 150+ pages, 40+ episodes, and a research engine spanning thousands of clinical papers, and responds in language that fits you.
Ask Grace →Over 40 episodes covering the science, technology, and lived experience of T1D. World-leading researchers, clinicians, and people living with the condition.
Listen now →Real experiences from people living with type 1 diabetes; exploring what it means to manage a condition that never takes a day off.
Read Stories →What’s new
Recently published
How we built Grace
A seven-year build, decoded. John walks through the three layers, the Taleb philosophy underneath, and the conversation with Tomorrow’s Medicine that brought it all on the record.
Hear the build story →Adjunctive Therapy in T1D
GLP-1 and GIP in type 1 diabetes: the four-part guide built from ADJUNCT I/II, ADJUST-T1D, and the DTS consensus. Grade A evidence where RCTs exist.
Read the guide →HbA1c and Time in Range
Five parts: the CGM Zone framework, glycator biology, finding your status, a personalised target matrix, and the Nassim Taleb lens on ensemble statistics.
Read the guide →The team
Built by clinicians, researchers, and creators
United by science, storytelling, and lived experience with type 1 diabetes.
Registered Dietitian and Diabetes Specialist, Birmingham Women’s and Children’s NHS Foundation Trust. Living with type 1 diabetes for over 25 years. Creator of GNL, the Explorers, and the Grace knowledge educator.
Registered Dietitian and Diabetes Specialist, BWC NHS Trust. Director of creativity and community at GNL: podcast, visual content, and the GNL voice.
Lead developer behind the GNL Explorers and platform infrastructure. Designed and built the interactive tools and the Grace API endpoint.
Stanford University. Exercise physiology and T1D; independent scientific review and challenge on every GNL output.
University of Graz. AID systems and exercise; world-leading research in real-world T1D management with technology.
Independent scientific review and challenge, ensuring every GNL output is rigorous, accurate, and grounded in current evidence.
Every Wednesday morning
Via Negativa Research Bytes
A short weekly distil from the GNL research engine. Five papers picked from the last seven days, grouped by topic, with the GNL takeaway alongside each one. Stripped to the 20% of the evidence that changes 80% of how you think. Written by the clinical team, reviewed by the scientific advisers.
John Pemberton and Phillip Hayes, reviewed by our independent scientific advisers. No sponsors. No filler.
Contact
Get in touch
We welcome opportunities for consultancy, educational projects, speaking engagements, and content development.
Keep GNL Grace Free for T1D
Grace is free, forever, for anyone with type 1 diabetes. Funded by Grace HCP licences (TBC), Grace Max licences (TBC), and plus-one donations (£5/month per slot via Buy Me a Coffee). Every paid licence funds two free Grace accounts for people with T1D, matched pound for pound by GNL.
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Where readers go next
The Glucose Never Lies® is a registered trademark (UK00004267795). GNL is an independent education platform; not a medical device, not a clinic, and not a substitute for clinical advice. All content is for education and discussion only. How Grace Works · Full Disclaimer · Privacy