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
Does Apple Cider Vinegar Help with Weight Loss?
Apple cider vinegar (ACV) is often promoted as a natural weight loss remedy, but the evidence for its effectiveness is limited and inconsistent. While some studies suggest modest benefits for blood sugar control and appetite, these effects are generally small and may not lead to meaningful weight loss on their own. The NHS advises that sustainable weight management in the UK comes from a combination of balanced eating, physical activity, and sometimes prescription medication—not from single foods or supplements.
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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 Apple Cider Vinegar?
Research on apple cider vinegar and weight loss shows mixed results. Some small studies indicate ACV may help with blood sugar control and reduce appetite slightly, but these benefits are typically modest and short-term. A few trials suggest people consuming ACV alongside a reduced-calorie diet may lose marginally more weight than diet alone—usually only 1–2 kg over several months.
- Most weight loss studies with ACV involve small participant numbers
- Effects on appetite are often temporary as the body adapts
- The acetic acid in ACV may slow gastric emptying, creating a temporary feeling of fullness
- No major UK or NHS guidelines recommend ACV specifically for weight management
- Any observed weight loss is likely from the calorie deficit of dieting, not the ACV itself
For meaningful weight loss, the NHS recommends a calorie deficit of around 500 kcal per day, achieved through diet and exercise, or—if eligible—prescription weight loss medication such as GLP-1 injections like Wegovy or Mounjaro.
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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.
Safer and More Effective Weight Loss Approaches
If you're interested in weight management in the UK, prescription weight loss injections offer evidence-based results with clinical trial data. Wegovy (semaglutide) and Mounjaro (tirzepatide) are GLP-1 medications licensed for weight loss in adults with a BMI of 30 or above, or 27+ with weight-related health conditions. Clinical trials show these may help users lose 15–21% of their body weight on average, alongside reduced-calorie diet and physical activity.
Before starting any weight loss approach—whether dietary, supplement-based, or prescription—consult your GP. They can assess your individual situation, discuss what's safe for you, and refer you to appropriate services. Our free GLP-1 weight loss calculator can help you explore potential outcomes if prescription medication is right 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.
Will apple cider vinegar alone help me lose weight?
Apple cider vinegar alone is unlikely to produce significant weight loss. While some evidence suggests modest appetite reduction, any weight loss would require a calorie deficit from diet and exercise. The NHS recommends prescription weight loss medication or lifestyle changes for sustainable results.
Is apple cider vinegar safe to drink daily for weight loss?
Apple cider vinegar is generally safe for most people in small amounts, but daily consumption at high concentrations can erode tooth enamel and may interact with certain medications. Always dilute it and consult your GP before using it regularly, especially if you have diabetes or take blood pressure medication.
What's the difference between apple cider vinegar and prescription weight loss injections?
Apple cider vinegar lacks strong clinical evidence for weight loss. Prescription injections like Wegovy are licensed medications with rigorous clinical trial data showing 15–21% average weight loss. They work by targeting hormone pathways that regulate appetite—a completely different mechanism.
Can I use apple cider vinegar while taking weight loss medication?
There's no established interaction between ACV and GLP-1 medications like Wegovy or Mounjaro, but always inform your prescriber of everything you consume. They can advise whether combining approaches is appropriate for your situation.
What's the NHS recommendation for weight loss?
The NHS recommends a balanced diet, regular physical activity, and losing 0.5–1 kg per week. If these approaches aren't working, speak to your GP about referral to specialist weight management services, where prescription medications may be considered if you meet eligibility criteria.
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.