Resources

GNL Resources

Downloadable PDFs, interactive tools, infographics, and calculators — all built to support education and self-discovery in type 1 diabetes.

How to use these resources

These resources are for educational exploration only. They describe average responses and general principles. They are not medical advice and cannot replace individual clinical guidance from your diabetes care team.

Calculators and tools are for education and discussion — not medical instruction
PDFs designed for interactive calculations require Adobe Acrobat PDF Reader
Use these alongside the GNL Guides for deeper context

Resources Downloads Tools

Browse the GNL resources

GNL Articles and Conference Reports

In-depth articles and reports from major diabetes conferences — covering the latest evidence, technology, and research.

Browse GNL Articles and Conference Reports

GNL Inspiring Stories

Real accounts from people with and without diabetes — moments of challenge, breakthrough, resilience, and the support that makes a difference.

Browse Inspiring Stories

Talk Diabetes with Steve — Resources

Resources from the Talk Diabetes with Steve collaboration — practical content for people living with diabetes.

Browse Talk Diabetes with Steve resources

Insulin on Board (IOB) explorers

Exercise IOB Hypoglycaemia Risk Explorer

An interactive tool for exploring how insulin on board interacts with exercise to affect hypoglycaemia risk in type 1 diabetes — for education and discussion with your care team.

Open the Exercise IOB Explorer

Physical Activity with IOB to Lower Hyperglycaemia Explorer

An interactive tool exploring how physical activity with insulin on board tends to affect high glucose — for education and self-discovery.

Open the Physical Activity with IOB Explorer

Hypo and Hyperglycaemia Explorer

Explore hypo prevention and treatment based on your total daily insulin dose and therapy type, and what the guidelines say about managing high glucose and ketone levels — for education and discussion with your care team.

Open the Hypo and Hyperglycaemia Explorer

Frequently Asked Questions — PDFs

Alcohol and Type 1 Diabetes — FAQ PDF

The mechanisms behind alcohol’s effects on glucose in type 1 diabetes, common questions, and what the evidence describes.

Download Alcohol and T1D FAQ (PDF)

Skincare for CGM and Pump Sites — FAQ PDF

Practical approaches to skin care for people using CGM and insulin pump technology — adhesion, reactions, and site rotation.

Download Skincare for T1D Technology FAQ (PDF)

Activity and Exercise with T1D — FAQ PDF

Common questions about physical activity and exercise in type 1 diabetes — mechanisms, preparation, and what tends to help.

Download Activity and Exercise with T1D FAQ (PDF)

Driving and diabetes — FAQ PDF

The regulations, mechanisms, and practical considerations around driving with type 1 diabetes.

Download Driving and Diabetes FAQ (PDF)

GLP-1s and Type 1 Diabetes — FAQ PDF

An overview of the current evidence on GLP-1 receptor agonists and GIP in type 1 diabetes — what is known, what is emerging, and what remains uncertain.

Download GLP-1s and T1D FAQ (PDF)

Infographic PDFs

Stimulants and T1D — infographic PDF

A visual guide to the mechanisms and considerations around stimulant use in type 1 diabetes.

Download Stimulants and T1D infographic (PDF)

Essential T1D education PDFs

Foundations — video series

The full Foundations sequence as a video playlist covering the core principles of type 1 diabetes.

Watch the Foundations playlist on YouTube

Interactive carbohydrate counting guide

A downloadable interactive PDF for exploring carbohydrate counting principles.

Download carbohydrate counting guide (PDF)

Dynamic Glucose Management infographic

A visual summary of the Dynamic Glucose Management framework for self-discovery with CGM.

Download Dynamic Glucose Management infographic (PDF)

Mealtime Insulin Guide

A downloadable PDF covering mealtime insulin dosing principles in type 1 diabetes.

Download Mealtime Insulin Guide (PDF)

Ultimate guide to mealtime insulin dosing

A comprehensive PDF exploring mealtime insulin dosing for type 1 diabetes in depth.

Download the ultimate mealtime insulin dosing guide (PDF)

Exercise resources

Tandem t:slim X2 with Control-IQ — Exercise guide

System-specific exercise guidance for Tandem Control-IQ users — for education and discussion with your care team.

Download t:slim X2 Exercise guide (PDF)

MiniMed 780G with SmartGuard — Exercise guide

System-specific exercise guidance for MiniMed 780G users — for education and discussion with your care team.

Download MiniMed 780G Exercise guide (PDF)

Omnipod 5 with SmartAdjust — Exercise guide

System-specific exercise guidance for Omnipod 5 users — for education and discussion with your care team.

Download Omnipod 5 Exercise guide (PDF)

CamAPS Fx — Exercise guide

System-specific exercise guidance for CamAPS Fx users — for education and discussion with your care team.

Download CamAPS Fx Exercise guide (PDF)

Exercise carbohydrate calculators

These tools require Adobe Acrobat PDF Reader for auto-calculations to function correctly — available for Computer, Android, and Apple devices.

Dexcom G6 — Exercise Carbohydrate Calculator

An interactive PDF calculator for exploring exercise carbohydrate needs with Dexcom G6.

Download Dexcom G6 Calculator (PDF)

FreeStyle Libre (1-3) — Exercise Carbohydrate Calculator

An interactive PDF calculator for exploring exercise carbohydrate needs with FreeStyle Libre.

Download FreeStyle Libre Calculator (PDF)

Medtronic G3 / G4 / Simplera — Exercise Carbohydrate Calculator

An interactive PDF calculator for exploring exercise carbohydrate needs with Medtronic CGM.

Download Medtronic CGM Calculator (PDF)

Dexcom G6 with pump — Exercise Carbohydrate Calculator

An interactive PDF calculator for exploring exercise carbohydrate needs with Dexcom G6 and an insulin pump.

Download Dexcom G6 with pump Calculator (PDF)

Automated Insulin Delivery (AID) systems

AID systems resources

Resources for choosing and using automated insulin delivery systems — including system comparisons and setup guidance for education and self-discovery.

Browse AID systems resources

GNL resources are educational tools built from population-level evidence. They show average responses, not individual predictions — which is why your diabetes care team’s knowledge of you is always essential. Read the full GNL disclaimer.

Christine

7 January 2026 at 12:36 pm

I have been recommended this website by my Diabetes Consultant

Steven

23 January 2026 at 2:52 am

Hi John
Just viewed your podcast on fast and slow movers.
I’ve been a T1diabetic for 50years and have never been in better control than now.
I would like to say that I believe you are giving the wrong advice with regard to dextrose tablets and sugar measured and dissolved in water.
I do agree that dextrose acts slightly quicker but when reviewing all of the information available I would expect you to remark on the facts of expenditure in £ and $ because T1D have so many things they have to personally buy and do not get help with from anyone, managing the cost of controlling glucose has to be considered a daily activity. As I said before I am very well controlled, 98% in target most days, and the two tools I have in the box for long term control is a bottle of 14 sugars pre diluted in water and my insulin pump. I hope you take my comments seriously

John
9 February 2026 at 12:43 pm
Hi Steven,
You raise a great point. Sugar is by far cheper then glucose tablets and products and works well. So, I would not argue against that at all. Once you find the right amount and it works, then great, it may just take an extra 5 mins to raise the glucose level and thats no issues. Thanks for making this point.