Amazon Reviews The GLP-1 Legacy
The GLP-1 Legacy book was written to assist anyone transitioning off GLP-1 medications and wondering how to maintain their weight loss in the real world. Rather than offering medical advice, the book provides a structured behavioural approach grounded in cognitive and health psychology. Below is a selection of verified reviews of the book on Amazon…
“An absolute must-read for anyone transitioning from weight loss injections. GLP-1 treatments are groundbreaking and life-changing, but long-term success depends so heavily on making meaningful psychological and behavioural shifts. The Shirrans understand this completely, and in this book, they have applied decades of specialist clinical knowledge and experience to help people extend their weight-loss success beyond the medication itself. I have recommended this book to several friends and family members, and I highly recommend it to anyone anxious about life post-treatment.” Dr Sarah Clarke, Amazon Verified Review Posted 11.03.26
“Honestly wasn’t sure what to expect, but this turned out to be a really useful read. There’s so much focus on the injections themselves, and not nearly enough on what happens after. This book fills that gap in a very practical, no-nonsense way. It doesn’t overpromise or preach, just gives you a clearer idea of how to manage things once the medication stops. If you’re even slightly worried about maintaining your weight loss long term, it’s well worth a look.” Amazon U.K. Customer – Amazon Verified Review Posted 28.03.26
“I was pleased to find this book just when I needed it. One of the most valuable things I learnt was just how strongly sleep and stress are related to weight gain and how quickly the body’s system responds as soon as the GLP-1 support is no longer present.” Amazon U.K. Customer –Amazon Verified Review Posted 29.03.26
“Having lost and regained 3 stone on three separate occasions, I was very keen to try the successful but expensive Munjaro. Knowing that it worked, but over a recommended period, I was desperate to understand whether I was wasting my money for a short-term benefit and whether stopping would require all sorts of mental and physical adjustments….The book provides real guidance on how to stabilise target weight whilst continuing the feel-good achievement factor. Nobody wants to lose the feeling of successfully meeting their own targets, and this book is the greatest help available.
I doubt I am alone in my concern about ‘what happens next’. Unfortunately, the system only provides the start answers with no stop assistance. So important do I believe this book to be that it should be recommended to everyone starting on a weight loss journey.” Amazon U.K. Customer – Amazon Verified Review Posted 19.03.26
“I’ve spent most of my life stuck in the same cycle,losing weight, regaining it and starting over. Using GLP-1 injections was the first time I experienced real relief from constant hunger, but it also made me question what would happen when they stopped.” Amazon U.K. Customer – Amazon Verified Review Posted 09.04.26
“It explains why your appetite returns and how to control it naturally, why maintaining weight is a completely different challenge and why willpower alone isn’t enough. What stands out is just how important it is to have a clear, realistic plan for life after the injections. The tools are practical and easy to apply, especially around managing triggers and slowing down automatic habits.” Amazon U.K. Customer – Amazon Verified Review Posted 09.04.26
“After losing weight with Ozempic, I was finding it difficult to keep the weight off, but after reading this book, things are much easier. It really has helped me a great deal to understand how to move forward and I would recommend it to anyone in the same position. Thank you.” Amazon Spain Customer – Amazon Verified Review Posted 29.04.26
“After losing 5 stone while using Mounjaro injections, I have now started to taper down my dose and wanting to stop them. This book came at exactly the right time for me. It’s packed with practical tips and realistic strategies for managing this transition. I really appreciate how it focuses on not just on stopping the medication, but on maintaining the progress I have made. The advice around building sustainable habits, managing appetite changes, and planning for long-term weight management was particularly valuable.” Amazon U.K. Customer – Amazon Verified Review Posted 09.03.26
“As a cognitive therapist I found the content very interesting and well presented. I’ve spoken to many people who are particularly concerned about what’s going to happen to them when their course of GLP-1s finishes and I think this book provides at least some of the wraparound care that is necessary. I wouldn’t hesitate to recommend it to any future clients.” Amazon Spain Customer – Amazon Verified Review Posted 29.03.26
“The book addresses the critical, often ignored question “ what happens after you stop GLP-1” medication, rather than just medical advice, the book emphasises using cognitive and health psychology to address the real reasons for weight regain. (emotional eating, routine drift and stress. The core message is that long-term success requires building a “legacy“ of healthy habits that outlast the temporary appetite suppressant of the drugs.” Amazon U.K. Customer – Amazon Verified Review Posted 23.03.26
“Great insight on how who should maintain your weight loss. Very educational on nutrition. Definitely worth a read. Well worth it going forward.” Amazon Verified Review Posted 04.03.2026
“Martin and Marion have provided a tool to make sure that the GLP-1 solution is an actual solution, not the start of a bigger problem. At this book’s core is a desire to empower people to manage their weight successfully once they STOP taking the jabs, something that I feel is being grossly underestimated and glossed over. Buy the book. Give it to your friends. You won’t regret it.” Amazon U.K. Customer – Amazon Verified Review Posted 29.03.26
“Like many other people who start on the jabs, I wasn’t given any advice or guidance at all about how to cope and maintain my weight afterwards. I was feeling a bit like a hamster in a wheel, knowing that I can’t stay on the jabs for ever, but at the same time starting to panic about what would happen to my weight as soon as I’m not on the medication any more.
When I came across The GLP-1 Legacy it was as if I’d suddenly been given a lifeline at exactly the right time. I would definitely recommend anyone who’s in the same position as me to read this book.” Amazon U.K. Customer – Amazon Verified Review Posted 29.03.26
“What I liked most is that the guidance feels supportive and achievable rather than overwhelming. It has helped me think about the next stage of my journey with much more confidence. If, like me, you’ve had success with GLP-1 injections and are starting to worry about coming off them, this book is definitely worth reading. I feel much more prepared to maintain my weight loss and manage things going forward.” Amazon U.K. Customer – Amazon Verified Review Posted 29.03.26
“A must buy for maintaining weight post-GLP-1. Hugely informative and understandable. Martin and Marion are experts in this field and the book is fantastic.” Amazon U.K. Customer – Amazon Verified Review Posted 25.03.26
The GLP-1 Legacy
The book was written to address the void that exists around the often non-existent aftercare required to help users transition off GLP-1s, whilst not regaining the lost weight. It draws on over 15,000 hours of behavioural work with clients, combined with real experiences from GLP-1 users, to explain what happens after the injections stop and how to respond to it. It covers managing returning appetite, handling triggers, rebuilding structure and creating a realistic plan for long-term weight stability. The book includes an introduction by Professor Jane Ogden, health psychologist at the University of Surrey.
The GLP-1 Legacy book includes a complete section on both tapering and microdosing. It introduces research data on both approaches and provides in-depth guidelines to users on how to implement the different approaches safely.
Medical Note
Any decision to adjust GLP-1 medication should be made with guidance from your prescribing clinician. This content is intended to support understanding and does not replace personalised medical advice.
Martin and Marion’s groundbreaking work has been featured in prominent newspapers such as The Daily Mail, The Times, The Telegraph, and The Express. Leading magazines like Vogue, Marie Claire, Good Housekeeping, and Reader’s Digest have also recognised their contributions. The Shirrans and several of their clients have also made television appearances on both sides of the Atlantic.
Over a thousand individuals, including medical professionals, celebrities, and the general public, have travelled from around the world to experience their weight-loss treatment. Some sought to enhance their appearance, while others prioritised their health, successfully reversing medical conditions like insulin resistance, diabetes, high blood pressure, and fatty liver disease.
Martin and Marion Shirran
Marion Shirran, as a director of Oxford Therapeutics Limited, is proud to be a registered Stakeholder in NICE – the National Institute for Health and Care Excellence. Additionally, she is involved in the government’s All-Party Parliamentary Group on Obesity.
They were awarded the ‘Most Innovative Obesity Psychological Therapy Service’ in the UK Mental Health Awards 2022. They are also co-authors of two bestselling books on the topic of non-surgical weight loss, published by Hay House.
