Podcast
The GNL Podcast
Long-form conversations with world-class clinicians, researchers, and people with lived experience, translating the latest diabetes science into useful understanding.
1. The current series
The AID series has started. It opens with Tandem Control-IQ+, now available, and works through what each automated insulin delivery system does, where it fits, and how to get the most from it. Independent. Unsponsored.
Laurel Messer: Tandem Control-IQ+ and Mobi
Why correction factor is the lever that moves time in range, what Control-IQ+ changes for the very young and the very high dose, the sick day and extended bolus tools, and the matchbox sized Tandem Mobi. With Laurel Messer, VP Global Medical Affairs, Tandem.
Listen and read the show notes →Accuracy, study design and the first MDI sensors
The CGM series is now complete: accuracy, study design, manufacturer differences, and the first sensors built around MDI workflows. Catch up in order.
The accuracy and study-design backbone
The episodes behind the series, in order.
2. Browse by theme
Three themes, one mission. Selection is Via Negativa work: the guests get on if the conversation changes how you read a CGM trace, talk to your team, or carry the diagnosis, and episodes that would only add noise do not get made. This podcast is for information only; it does not create a therapeutic relationship or replace personal medical advice.
Lifestyle and type 1 diabetes
Why glucose behaves the way it does, nutrition, exercise, alcohol, pregnancy, and the mental cycles that accompany life with T1D.
- Episode 7, Fundamentals of The GNL
- Episode 8, Activity Snacking for Time-in-Range
- Episode 14, Insulin Resistance and T1D
- Episode 15, C-Peptide and T1D
- Episode 16, Driving: 5-to-Drive
- Episode 18, Exercise without fear
- Episode 25, Partying with T1D
- Episode 29, 5 Principles of T1D Behaviour Change
- Episode 31, Pregnancy and T1D
- Episode 32, Menstrual cycle and T1D
- Episode 33, Exercise for females with T1D
Technology and drugs
CGM, automated insulin delivery, GLP-1s, and emerging therapies shaping real-world type 1 care, clear, grounded, evidence-led.
- Episodes 1 to 6, AID Systems Guide
- Episode 9, ATTD 2025
- Episodes 10 to 12, CGM Series
- Episode 17, GLP-1 in Type 1 Diabetes
- Episode 19, CGM Regulation: iCGM vs eCGM and the IFCC
- Episode 20, Standardising CGM Performance Testing
- Episode 24, T1D Skincare and Control-IQ
- Episode 30, Diabetotech: Educating on Algorithms
- Episode 34, Building High-Performance T1D Care
- Episode 36, CGM Accuracy: DSN Forum
- Episode 37, Dexcom G7 and ONE+
- Episode 39, Abbott FreeStyle Libre 2 Plus and 3 Plus
- Episode 40, Accu-Chek SmartGuide for MDI
- Episode 42, DICE 2026: Highlights from Dublin
- Episode 43, Tandem Control-IQ+ and Mobi
Beyond the numbers
Community, emotional support, identity, and building a life that works with diabetes rather than pretending it is not there.
Review episodes
Summaries capturing the highlights from across the podcast series.
Listen now
Latest episodes
The last ten episodes
Every recent episode, on every platform
Episodes 34 to 43, with the listen and watch links for each one. Pick the platform you already use. Where an episode has a video cut on YouTube, it is linked; the rest are audio.
Episode 43
Tandem Control-IQ+ and Mobi: opening the AID Series
Laurel Messer, VP of Global Medical Affairs, Tandem Diabetes Care. The registry data behind correction factor as the number one lever, what Control-IQ+ changes, and the Tandem Mobi.
Episode 42
DICE 2026: Seven Conversations from Croke Park
Hosted by Anjanee Kohli with John Pemberton. Seven short interviews from the Diabetes Ireland Conference and Exhibition.
Episode 41
CGM Series Round-Up, Grace Update, John on Diabetech
Hosted by Anjanee Kohli, featuring John Pemberton. The listener Q&A on testing standards, Grace, and AI in healthcare.
Episode 40
Accu-Chek SmartGuide: CGM Generation 2.0 for MDI
Amy Jolley, Highly Specialised Dietitian and Lead Educator at DTN-UK. Independent of Roche Diagnostics.
Episode 39
Abbott FreeStyle Libre: Accuracy, Simplicity and What’s Next
Michael Skarlatos, Abbott UK Medical Affairs and former diabetes specialist dietitian.
Episode 38
Q1 2026 Quarterly Review: Grace, the Explorers, and What Changed
John Pemberton and Anjanee Kohli on the first quarter of the year.
Episode 37
Dexcom G7 and ONE+
Adam Dawes, Senior Medical Affairs Manager at Dexcom UK and Ireland, and former paediatric diabetes nurse specialist.
Episode 36
CGM Accuracy: The DSN Forum and ATTD 2025
Amanda Williams, Beth Kelly and Tamsin Fletcher-Salt of the Diabetes Specialist Nurse Forum UK.
Episode 35
CGM Accuracy and Study Design
Professor Othmar Moser, Medical University of Graz, on what MARD really tells you and the questions to ask of any accuracy study.
Episode 34
Building High-Performance Type 1 Diabetes Care
Dr Peter Adolfsson, paediatric diabetologist and lead author of the ISPAD 2022 Exercise Guidelines.
3. Subscribe and listen
Find the podcast on all major platforms. Also available on Pocket Casts, Overcast, Castro, and every other major podcast app.
Spotify
The full back catalogue, free, with no account needed to listen in a browser.
Listen free →Apple Podcasts
Subscribe so new episodes arrive on release, and leave a review if an episode was useful.
Subscribe and review →YouTube
The episodes that have a video cut, plus the shorter explainer clips pulled from them.
Watch the episodes →Buzzsprout
Where the show is hosted. Every episode in one list, with the raw audio and the RSS feed.
All episodes →4. The host
Host and Founder
John Pemberton
John is a diabetes educator, researcher, and dad, living with type 1 since 2008. He started The Glucose Never Lies when his son Jude tested positive for type 1 diabetes antibodies, wanting to create the resource he wished he had had on day one: clear, practical, evidence-led guidance.
On the podcast, John sits down with world-class clinicians, researchers, and people with lived experience to translate the latest science into useful understanding, topics ranging from CGM and AID to nutrition, exercise, sleep, and still living a full and fun life.
Long-form conversation captures nuance that written guides can miss. The GNL Podcast brings together lived experience, professional practice, and cutting-edge research, focused entirely on type 1 diabetes.
“Thank you so much for your podcasts on the various pumps. This has helped us find the right one for my son and, more importantly, gave us the knowledge we needed to have an informed conversation with our amazing care team.”
Karine, mum of a wonderful son who lives with T1DGet in touch
Have a guest in mind, or want to come on the show?
The best episodes have come from listeners who pointed us at someone worth hearing, or who put their own hand up. If you know a clinician, a researcher, or a person living with type 1 whose story would change how someone reads a CGM trace or talks to their care team, tell us. And if that person is you, even better. Anjanee looks after the podcast guest list and would love to hear from you.
Email anj@theglucoseneverlies.com5. Beyond the podcast
There is more to GNL than the show. Ask Grace a question in your own situation, work through a guide, or open an explorer and put your own numbers in.
Pair the podcast with these guides
CGM Guide for T1D
The five questions that decide whether a sensor has been tested properly, then a deep dive into each sensor that clears all five.
Read the guide →AID Systems Guide
Every system that clears the evidence bar, and what each algorithm asks of you. The companion read to the AID series.
Read the guide →Exercise and T1D
Fast physiology meeting slow insulin. Where the risk actually sits before, during and after a session, on injections and on an AID system.
Read the guide →Menstrual Cycle and T1D
The pattern that repeats every month and rarely gets named in clinic, and what the evidence says about working with it.
Read the guide →Foundations, 12 topics
Everything else assumes these are in place. Twelve short parts, from what type 1 is through to measuring whether things are going well.
Read the guide →John on other podcasts
A small slate of conversations John has joined on other people’s shows. The full GNL Podcast list is above; this row is for the times John was the guest.
How we built Grace
Host Arseniy Arsentyev. One hour twenty-nine. The seven-year build, three layers, the Taleb philosophy, and the funding model on the record for the first time.
Hear the build story →