The Glucose Never Lies®
The science and lived experience
of type 1 diabetes
An independent education platform that translates complex diabetes science into clear, practical understanding. Built by clinicians and people living with type 1 diabetes, grounded in peer-reviewed evidence, and designed to help you explore how glucose really works.
Orientation
What is The Glucose Never Lies?
GNL is an educational platform for type 1 diabetes. It explains the mechanisms behind glucose behaviour (why insulin, food, activity, and physiology interact the way they do) so that you can build your own understanding through observation, exploration, and conversation with your care team.
This is not a clinical decision support tool. It does not tell you what to do. It describes what tends to happen on average, explains the science behind it, and invites you to compare that against what your own CGM data shows.
The GNL approach
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, and therapy type) that explain the vast majority of glucose outcomes. We built everything around those. We removed the rest.
Every guide and every podcast episode 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.
Where to start
From foundations to self-discovery.
Two ways in; take them in either order.
The essential building blocks: insulin, carbohydrate, activity, CGM, and glucose patterns.
Go deeper. In-depth guides on IOB, CGM technology, AID systems, and exercise physiology.
Ask Grace
Grace is our AI education assistant for type 1 diabetes. Ask a question in plain words and Grace points you to the right guide and the evidence behind it. Grace explains and teaches; she does not give personal medical advice, which always stays with your care team.
Look for the Ask Grace button in the bottom right corner of every page, or read more about Grace.
Explore
Explore the platform.
Diabetes Foundations
The essential building blocks of type 1 diabetes, in plain language.
Explore the FoundationsGNL Guides
In-depth, evidence-graded guides on IOB, CGM technology, AID systems, and exercise physiology.
Browse the GuidesAbout GNL
Who builds this, why it exists, and the disclaimer that governs everything here.
Meet the teamThe GNL Podcast
Latest episodes.
DICE 2026 Highlights
Highlights and key takeaways from the DICE 2026 conference.
Listen to Episode 42CGM Series Review and the Diabetech Conversation
Closing the CGM series, with a wide-ranging conversation on where diabetes technology is heading.
Listen to Episode 41Q1 2026 Quarterly Review
A look back at what changed across the first quarter of 2026.
Listen to Episode 38Get in touch