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
Do Vibration Machines Really Help You Lose Weight?
Vibration machines are marketed as a quick and easy way to lose weight, but the scientific evidence suggests they're unlikely to be effective for meaningful weight loss on their own. While vibration platforms can provide some benefits for fitness and muscle tone, sustainable weight loss requires a calorie deficit alongside increased physical activity and dietary changes. If you're looking to manage your weight in the UK, there are more evidence-based approaches available — from NHS weight loss support to prescription weight management options — that deliver proven results.
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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.
What Does the Evidence Say About Vibration Machines?
Scientific research on vibration machines for weight loss shows mixed and limited results. While some studies suggest vibration platforms may slightly improve muscle activation and muscle strength, the evidence for significant weight loss is weak. A key issue is that vibration machines alone do not create the calorie deficit necessary for weight loss.
- Calorie burn is minimal: Vibration machines burn very few calories compared to traditional exercise — estimates range from 1–3 calories per minute, which is far lower than walking, cycling, or resistance training.
- No strong clinical trials: Unlike prescription weight loss medications such as GLP-1 injections, there are no large-scale clinical trials demonstrating vibration machines produce significant or sustainable weight loss in humans.
- Muscle engagement is limited: While vibration may engage muscles passively, the intensity is too low to create meaningful metabolic change or the calorie deficit needed for weight management in the UK.
In short, vibration machines cannot replace proper exercise, dietary changes, or evidence-based weight management approaches.
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.
Better Evidence-Based Approaches to Weight Loss
For effective weight management in the UK, the NHS recommends approaches that have strong scientific backing:
- Calorie deficit through diet: A reduction of approximately 500 kcal per day can result in sustainable weight loss of around 0.5 kg per week.
- Regular physical activity: Combine cardiovascular exercise (brisk walking, cycling, swimming) with resistance training for better results.
- Behavioural support: NHS weight management programmes provide structured guidance and accountability.
- Prescription medications: For eligible adults, GLP-1 weight loss injections like Mounjaro and Wegovy have proven efficacy in clinical trials, supporting weight loss alongside lifestyle changes.
Our free BMI calculator can help you assess your starting point, and our GLP-1 weight loss calculator can show projected outcomes if prescription medication is suitable for you.
- 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 vibration machines burn calories?
Vibration machines burn very few calories — typically 1–3 per minute — far less than traditional exercise. A 30-minute session might burn 30–90 calories, equivalent to a small snack. This is insufficient to create the calorie deficit needed for meaningful weight loss. Walking, running, or cycling burns significantly more calories.
Can vibration machines be used alongside other weight loss methods?
Yes, vibration machines can be part of a fitness routine and may support muscle engagement, but they should not be relied upon as a primary weight loss tool. Combining vibration training with a calorie-deficit diet, regular cardio, and strength training may be beneficial — but the vibration alone is unlikely to drive weight loss results.
What does the NHS recommend for weight loss?
The NHS recommends a combination of dietary changes (creating a 500 kcal daily deficit), regular physical activity (at least 150 minutes of moderate exercise per week), and behavioural support through NHS weight management programmes. For eligible adults, prescription weight loss medications may also be recommended by a specialist service.
Are prescription weight loss injections more effective than vibration machines?
Yes. Clinical trials of GLP-1 medications like Wegovy and Mounjaro show average weight loss of 15–21% of body weight when combined with lifestyle changes. Vibration machines have no comparable clinical evidence. Prescription medications require a clinical assessment and prescription from a licensed healthcare provider.
How do I know if I'm eligible for prescription weight loss treatment in the UK?
Adults with a BMI of 30 or above, or 27 or above with weight-related health conditions (such as type 2 diabetes, high blood pressure, or sleep apnoea), may be eligible. Eligibility is assessed on an individual basis by a GP or specialist prescriber. Use our free BMI calculator to check your starting BMI.
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.