The Glucose Never Lies® Articles
Original articles on type 1 diabetes,
technology, and the thinking
behind the numbers.
Writing that goes deeper than the guides, and stands on its own. From the physiology of insulin to the psychology of behaviour change, from the 120-day carb experiment to the algorithms behind CGM accuracy. Read them in any order.
1. Technology and algorithms
How the devices actually work. The engineering and the clinical evidence behind CGM accuracy, AID algorithms, and insulin on board.
CGM Calibration in AID
Why accuracy is your algorithm’s airbag. What happens when the CGM is wrong and the AID system is making decisions on that wrong number, and where the error enters the loop.
Read the article →Articles, not guides. Everything on this page is standalone and can be read in any order. The sequenced learning, with a quiz at the end of each part, sits in the guides; the last section of this page points you there.
2. Glucose management
Practical strategies that move the needle. Evidence-based approaches to everyday glucose management, from correction dosing to behaviour change to the simplest intervention of all.
The 20 by 2 Rule
Activity snacking to supercharge insulin and get back in range. The simplest and most underused tool in glucose management, and the one that needs no device and no dose.
Read the article →Behaviour Change for T1D
New financial year, new you. Five behaviour change principles applied to type 1 diabetes, and why the ones that survive contact with a real week are rarely the ambitious ones.
Read the article →3. Clinical deep dives
Understanding the physiology. Foundational clinical topics explored in depth, with the evidence graded as it goes.
C-Peptide: What Type of Type 1 Do You Have?
Residual beta-cell function, honeymoon periods, and why C-peptide is worth knowing about. On what the measurement can and cannot tell you, and the conversation it opens with your team.
Read the article →4. Lifestyle and real life
Living with type 1 beyond the clinic. Food experiments, and the parts of life that textbooks skip.
My 120-Day Carb Experiment
What John learned living it. Four months of tracking every carbohydrate, every bolus and every outcome, written up honestly, including the parts that did not work.
Read the article →5. Conference reports
What the research conferences revealed. Highlights and analysis from the major diabetes technology and research meetings.
EASD 2025: The Technologies That Will Reshape Diabetes Care
CGM as infrastructure, AID scaling across populations, and what changed in Vienna. A report on where the field moved, and where it only looked like it moved.
Read the article →ATTD 2025 Top 10 Hits
Advanced Technologies and Treatments for Diabetes. The ten presentations that mattered most, and what each one supports once you read past the headline.
Read the article →ISPAD 2024: Highlights
Seven takeaways from Lisbon: the pace of screening and prevention research, and the early GLP-1 results in paediatric diabetes.
Read the article →ATTD 2024 Conference Report
The full conference report from ATTD 2024, kept here for the record so the year-on-year picture can be read in one place.
Read the article →6. FAQs and quick reference
Common questions, gathered in one place. Focused pages on the topics people ask about most.
Exercise & T1D FAQ
Activity, exercise and type 1 diabetes: the questions that come up most often, answered together rather than scattered across a long read.
Read the FAQ →7. Inspiring stories
Real lives, real resilience. People living with type 1 diabetes, and the people who support them, in their own words.
Browse Stories
The full collection of GNL Inspiring Stories from people living with T1D, and from the people whose quiet support rarely gets seen.
View all stories →8. Where to go next
The two other routing pages on the site, if an article was not what you were after.
GNL Guides
The sequenced set: foundations first, then core management, key guides, technology and evidence, and children and young people. Each part ends in a quiz.
Open the guides →Resource Hub
Downloads, explorers, podcast episodes and the wider resource set, gathered on one page.
Open the hub →