The UK's most complete GLP-1 guide
Every Question Answered. Every Side Effect Explained.
- How GLP-1 medications work
- Mounjaro vs Wegovy compared
- Injection instructions
- Side effects & solutions
- What to eat on treatment
- FAQs answered
Free tracker included with every download this week
Top Weight Loss Books for UK Readers
Finding the right weight loss book can support your weight management journey, whether you're making lifestyle changes or complementing prescription weight loss treatment. The best weight loss books combine evidence-based advice with practical strategies that work for real life in the UK. From understanding the psychology of eating to learning nutrition science, a good book can provide motivation, knowledge, and accountability. This guide covers some of the most helpful weight loss books available to UK readers, including those focused on sustainable approaches and behavioural change.
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Calculate Your BMI Instantly
Enter your height and weight below. Supports both imperial (stone & lbs) and metric (kg). Results include NHS category, healthy weight range, and ethnicity adjustments.
What Is BMI and Why Does It Matter?
Body Mass Index (BMI) is the most widely used screening tool for assessing whether your weight falls within a healthy range. Used by the NHS, GPs, and weight management services across the UK, BMI provides a quick snapshot of your weight relative to your height. The formula is simple: your weight in kilograms divided by your height in metres squared (kg/m²).
While BMI isn't a perfect measure — it doesn't account for muscle mass, bone density, or fat distribution — it remains the standard first step in identifying potential weight-related health risks including type 2 diabetes, cardiovascular disease, high blood pressure, and certain cancers.
The NHS also recommends adjusted thresholds for people of South Asian, Chinese, or Black African heritage — a BMI of 23 or above is classified as overweight, and 27.5 as obese. Our calculator includes this adjustment as a one-click toggle.
Essential Weight Loss Books Worth Reading
The Obesity Code by Dr Jason Fung — A Canadian nephrologist's deep dive into why we gain weight and how insulin resistance drives obesity. Fung challenges conventional calorie-counting advice and explains the hormonal factors affecting weight. This book resonates with UK readers interested in understanding the science behind weight gain.
Brain Over Binge by Kathryn Hansen — Focuses on the neuroscience of cravings and binge eating. Hansen offers practical strategies to distinguish true hunger from habit-driven eating, useful for anyone struggling with emotional eating or food obsession.
How Not to Diet by Dr Michael Greger — A plant-based approach to sustainable weight loss backed by hundreds of scientific studies. Greger reviews evidence on different diet approaches and explains which foods actively support weight loss. Aligns well with NHS nutrition guidance.
Atomic Habits by James Clear — Not exclusively about weight loss, but invaluable for building the small daily habits that create lasting weight management. Clear's framework helps readers create sustainable behaviour change rather than relying on willpower alone.
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How It Works
Three simple steps to understand your weight and take action.
Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.
If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.
Use our progress tracker to log your weight weekly, visualise your journey with charts, and stay motivated — all stored privately in your browser.
Free Weight Loss Tools & Guides
Everything you need to understand your weight, explore medication options, and track your progress — completely free.
Books on Psychology, Mindfulness, and Eating Behaviours
Intuitive Eating by Evelyn Tribole and Elyse Resch — A foundational book on rejecting diet culture and developing a healthy relationship with food. Useful for readers who've struggled with restrictive dieting or yo-yo weight cycling.
The Body Keeps the Score by Bessel van der Kolk — While primarily about trauma, this book explores how stress and emotional dysregulation affect eating and weight. Valuable for understanding links between mental health and weight management.
Mindful Eating by Jan Chozen Bays — A practical guide to eating with awareness, reducing overeating, and enjoying food without guilt. Complements any weight loss approach by building conscious eating habits that support sustainable weight management in the UK.
- Dual GIP/GLP-1 receptor agonist
- Up to 22.5% body weight loss (SURMOUNT-1)
- Weekly injection, dose escalation over 20+ weeks
- Available via private prescription in the UK
- Doses: 2.5mg → 5mg → 7.5mg → 10mg → 12.5mg → 15mg
- GLP-1 receptor agonist
- Up to 15–17% body weight loss (STEP trials)
- Weekly injection, 5-step dose escalation
- NHS & private prescription available
- Doses: 0.25mg → 0.5mg → 1mg → 1.7mg → 2.4mg
Mounjaro vs Wegovy: Head-to-Head
A side-by-side comparison of the two most popular GLP-1 weight loss medications available in the UK.
| Feature | Mounjaro | Wegovy |
|---|---|---|
| Drug class | Dual GIP/GLP-1 agonist | GLP-1 agonist |
| Active ingredient | Tirzepatide | Semaglutide |
| Avg. weight loss | 15–22.5% | 12–17% |
| Key trial | SURMOUNT-1 (2022) | STEP 1 (2021) |
| Max dose | 15 mg weekly | 2.4 mg weekly |
| Escalation period | 20–32 weeks | 16–20 weeks |
| Administration | Weekly injection (pen) | Weekly injection (pen) |
| NHS availability | Private prescription only | NHS & private |
| Approx. private cost | £150–£250/month | £150–£300/month |
| Common side effects | Nausea, diarrhoea, constipation | Nausea, vomiting, diarrhoea |
Data sourced from SURMOUNT-1 and STEP 1 clinical trials. Costs are approximate and vary by provider. Always consult a prescriber.
Am I Eligible for Weight Loss Medication?
In the UK, eligibility for GLP-1 weight loss medications like Mounjaro and Wegovy is based on your BMI and overall health profile.
- BMI of 30 or above (obese)
- Age 18 or over
- No contraindicated conditions
- Committed to lifestyle changes
- BMI of 27 or above
- Plus type 2 diabetes
- Or high blood pressure
- Or obstructive sleep apnoea
Use our BMI calculator to check whether your BMI falls within the eligible range.
How We Built These Tools
Every calculator and guide on myweightcheck is built with accuracy and transparency in mind. Our BMI calculator uses the standard WHO formula with NHS-aligned category thresholds. Our GLP-1 projections are modelled on published clinical trial data from SURMOUNT and STEP studies.
All data stays on your device. We don't require sign-ups, and we don't store your health information on any server. Your progress tracker saves data locally in your browser using localStorage, so only you can see it.
We're based in the UK and our tools are designed specifically for UK users — supporting stone & lbs by default, referencing NHS guidelines, using NICE-approved medication data, and linking to GPhC-registered pharmacies.
Frequently Asked Questions
Common questions about BMI, weight loss medications, and our free UK tools.
Do weight loss books actually help you lose weight?
Weight loss books can be highly effective when they change how you think about eating and health. The best books combine science with practical strategies and psychology. However, books are most effective alongside other support — like our free BMI calculator to track progress, lifestyle changes, and potentially prescription weight loss treatment if appropriate for your circumstances. Books provide knowledge; sustainable weight loss requires action.
Which weight loss book is best for NHS weight management guidance?
"How Not to Diet" by Dr Michael Greger aligns closely with NHS nutrition recommendations, emphasising whole foods and plant-based approaches. The Obesity Code is excellent for understanding hormonal factors in weight gain. For psychological approaches recommended by NHS weight management services, Intuitive Eating and Atomic Habits both support behaviour change. Choose based on whether you prefer nutrition science, psychology, or habit formation.
Are these books suitable for people taking Mounjaro or Wegovy?
Yes. Prescription weight loss medications like Mounjaro and Wegovy work best alongside lifestyle changes. Books on psychology, mindfulness, and habit-building are particularly valuable while taking GLP-1 weight loss medication because they help you build sustainable eating patterns. Our GLP-1 weight loss calculator can project your potential results when combined with these behavioural strategies.
Can I use a weight loss book instead of seeing my GP about weight management?
Books are educational support, not medical treatment. If you have overweight or obesity causing health concerns, speak to your GP. They can assess whether prescription weight loss options are appropriate and refer you to NHS weight management services. Books work best as part of a comprehensive approach that includes professional guidance and, where suitable, prescription medication alongside lifestyle change.
How do I know if a weight loss book is evidence-based?
Look for books by qualified authors (medical doctors, registered dietitians, psychologists), extensive citations of scientific research, and recommendations from NHS services or reputable health organisations. Be cautious of books promising gradual weight management or extreme approaches. The books listed here all emphasise sustainable weight management aligned with UK health guidelines and current obesity science.
Ready to take control of your weight loss journey?
Start with a free BMI check, explore your GLP-1 options, or begin tracking your progress today. No sign-up. No cost. Just results.