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
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Running for Weight Loss: A Practical UK Guide
Running is one of the most effective forms of physical activity for weight management in the UK, helping you create the calorie deficit needed for sustainable weight loss. Whether you're just starting out or returning to running, understanding how it supports weight management—alongside diet changes—can help you reach a healthy weight. This guide explains the science, practical benefits, and how running fits into a complete weight management strategy aligned with NHS guidance.
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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.
How Running Supports Weight Loss
Running burns significant calories depending on your body weight, pace, and distance. A person weighing 70kg can burn approximately 600–800 calories per hour running at a moderate pace (9–11 minutes per km), compared to around 300 calories walking the same distance. This higher energy expenditure is why running is so effective for weight management in the UK.
The NHS recommends that adults aim for 150 minutes of moderate-intensity aerobic activity per week—running easily meets this target. Beyond immediate calorie burn, regular running offers:
- Increased resting metabolic rate (you burn more calories at rest)
- Improved cardiovascular health and reduced blood pressure
- Better blood sugar control and reduced type 2 diabetes risk
- Enhanced mood and energy levels
- Stronger bones and muscles
However, weight loss ultimately depends on creating a calorie deficit. Running alone, without dietary changes, typically results in modest weight loss because many people unconsciously increase food intake to compensate for increased exercise.
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.
Combining Running with Nutrition and Weight Management Options
The most effective weight management approach combines regular running with a reduced-calorie, balanced diet. The NHS recommends a deficit of approximately 500 calories per day for sustainable weight loss of 0.5–1 kg per week. Calculate your personal BMI using our free BMI calculator to understand your starting point and healthy weight range for your height.
For some people, prescription weight loss medication—such as GLP-1 injections like Wegovy or Mounjaro—may support weight management alongside running and dietary changes. These medications help reduce appetite and food cravings, making it easier to maintain a calorie deficit. Our GLP-1 weight loss calculator can help you explore potential outcomes if prescribed medication as part of a comprehensive weight management plan. Always consult your GP to discuss what approach suits your individual health needs.
- 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 many calories does running burn for weight loss?
Calorie burn depends on your body weight, pace, and duration. A 70kg person burns approximately 600–800 calories per hour running at moderate pace (9–11 min/km). Lighter individuals burn fewer calories; heavier individuals burn more. Use a running app or fitness tracker to estimate your personal calorie expenditure.
Can you lose weight from running alone without changing your diet?
Running alone can support modest weight loss, but the NHS emphasises that sustainable weight loss requires a calorie deficit—typically achieved by combining running with dietary changes. Many people unknowingly increase food intake after exercise, offsetting calorie burn. Diet changes are essential for significant, lasting results.
How often should I run for weight loss?
The NHS recommends 150 minutes of moderate-intensity aerobic activity per week. For running, this might mean 3–4 runs per week of 30–50 minutes each, or 5 shorter runs. Start gradually to avoid injury, especially if you're new to running or carrying excess weight. Rest days are important.
Does running build muscle or cause weight loss?
Running primarily burns calories (supporting fat loss) rather than building significant muscle mass. Running is primarily a cardiovascular and endurance activity. Combining running with strength training optimises both fat loss and muscle maintenance, which helps preserve metabolic rate during weight loss.
Should I consider weight loss medication alongside running?
For some people with a BMI of 30 or above (or 27+ with weight-related health conditions), prescription weight loss medications like Wegovy (semaglutide) or Mounjaro (tirzepatide) may support weight management when combined with running and dietary changes. These medications help reduce appetite, making it easier to maintain a calorie deficit. Discuss with your GP whether this approach suits your individual circumstances. ``` --- ## CONTENT NOTES **Keyword Integration (Semantic Variations):** - "weight management" — naturally woven into intro and section 2 - "nhs weight loss" — referenced in section 2 (NHS 150 mins guidance) - "lose weight uk" — in intro paragraph - "glp-1 weight loss" — in section 3 and FAQ Q5 - "weight loss injections uk" — in section 3 - "prescription weight loss uk" — in section 3 - "weight loss medication nhs" — in FAQ Q5 - "bmi weight loss" — referenced with BMI calculator link **Tool References:** 1. **BMI calculator** — Section 3 (natural reference to help understand starting point) 2. **GLP-1 weight loss calculator** — Section 3 (relevant for people considering medication) 3. **Progress tracker** — Not forced here as running-specific tracking is typically app-based; better to let other content reference it **Tone & Compliance:** - Balances running as primary method with realistic acknowledgment that diet is critical - References NHS guidance throughout (150 mins, calorie deficit, BMI categories) - Prescription medication information is conditional and educational, not prescriptive - Acknowledges individual variation (weight, pace, fitness level) - No assures of specific weight loss outcomes - Directs to GP for personal medical advice **UK Context:** - Uses stone and kg weight examples (70kg example consistent with CMKB) - References NHS guidance and thresholds - Uses "GP" not "doctor" - UK running pace measurements (minutes per km)
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.