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
Walking and Weight Loss Chart: UK Guide to Exercise and Medication
Walking is an excellent low-impact activity for weight management, but realistic expectations matter. A walking routine alone typically contributes to gradual weight loss when combined with dietary changes. For adults in the UK who meet specific criteria, prescription weight loss medication may complement walking and lifestyle changes. This guide explores how walking fits into an overall weight management uk approach, the evidence behind it, and when medication options become available through the NHS or private prescribing.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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.
UK Prescription Weight Loss Options and How Walking Fits In
For UK adults eligible for prescription weight loss medication, combining regular walking with treatment can enhance results. Three GLP-1 medications are currently licensed in the UK for weight management: Mounjaro (tirzepatide), Wegovy (semaglutide), and Saxenda (liraglutide). Eligibility criteria include a BMI of 30 or above, or BMI 27–29.9 with weight-related health conditions such as type 2 diabetes, high blood pressure, or sleep apnoea.
In clinical trials, these weight loss injections uk options showed average weight loss of 14–21% of body weight over 68 weeks when used alongside reduced-calorie diet and increased physical activity—which includes walking. Walking supports overall fitness and cardiovascular health, but medication plus lifestyle changes typically produces better results than either alone. All prescription options require a clinical assessment and GP consultation to determine suitability.
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
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.
NHS vs Private Access and Taking the First Step
In the UK, weight loss medication nhs access is available through specialist tier 3 weight management services, though availability and waiting times vary significantly by region and ICB. Private access is available through GPhC-registered online pharmacies following a remote clinical assessment. Whichever route you choose, start by talking to your GP about your weight management goals and whether prescription weight loss might be appropriate for you.
Check your eligibility using our free BMI calculator above, then discuss results with your healthcare provider. Your GP can refer you to NHS specialist services or provide guidance on private options. Walking should continue as part of your overall health routine—combining physical activity with professional support gives the best chance of sustainable weight management uk success.
- 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.
How much weight can walking alone help me lose?
Walking typically supports weight loss of 0.25–0.5 kg per week when combined with a reduced-calorie diet. A 30-minute brisk walk burns approximately 150–250 kcal depending on pace and body weight. However, walking alone rarely produces significant weight loss without dietary changes. For eligible adults, combining walking with prescription medication can improve results substantially.
What is the difference between Mounjaro and Wegovy for weight loss?
Mounjaro (tirzepatide) is a dual GIP and GLP-1 receptor agonist with average weight loss of 15–21% in trials. Wegovy (semaglutide) is a single GLP-1 agonist with average weight loss around 15%. Both are once-weekly injections. Individual results vary. A prescriber can advise which is more suitable based on your health history and needs.
Am I eligible for prescription weight loss medication on the NHS?
You may be eligible if you have a BMI of 30 or above, or BMI 27–29.9 with a weight-related health condition (diabetes, high blood pressure, sleep apnoea, or cardiovascular disease). Eligibility thresholds are lower for South Asian, Chinese, Black African, and Black Caribbean adults. Your GP can assess your personal situation and refer you to specialist services if appropriate.
Can I use prescription weight loss medication while walking regularly?
Yes. In fact, clinical trials combined medication with lifestyle changes including physical activity. Walking is beneficial for cardiovascular health and should continue alongside medication. Always inform your prescriber about your exercise routine and any other health activities you're doing.
How do I find out if I can access weight loss medication through the NHS?
Start by discussing your weight management goals with your GP. They can assess your BMI, health conditions, and suitability for referral to NHS specialist weight management services. Waiting times vary by region. Alternatively, you can explore private prescribing through accredited online providers. Use our free BMI calculator above to check your personal BMI before your GP appointment.
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.