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 is often promoted as a weight loss remedy, but the evidence for its effectiveness is limited. While some small studies suggest it may support modest weight management when combined with a reduced-calorie diet, it is not a standalone solution. The best approach to weight loss in the UK remains a combination of dietary changes, increased physical activity, and where appropriate, prescription weight loss medication alongside lifestyle modifications. Understanding what actually works—and what doesn't—is essential for sustainable results.
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.
What Does the Evidence Say About Apple Cider Vinegar?
Research on apple cider vinegar and weight loss is limited and inconclusive. Several small studies have suggested potential benefits, but the evidence remains weak:
- Blood sugar control: Some evidence suggests acetic acid (the main active compound in apple cider vinegar) may help slow gastric emptying and improve blood sugar response, potentially reducing appetite slightly.
- Weight loss effect: A 2009 Japanese study found participants who consumed vinegar lost an average of 1–2 kg over 12 weeks, but this was modest compared to dietary changes alone.
- Limitations: Most studies are small, short-term, and conducted in laboratory settings—not reflecting real-world UK weight management conditions.
The NHS does not recommend apple cider vinegar as a primary weight loss strategy. For evidence-based weight management in the UK, focus on calorie reduction, physical activity, and where clinically appropriate, prescription weight loss medication or NHS weight management programmes.
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.
Practical Weight Loss Strategies That Work in the UK
Instead of relying on apple cider vinegar, the NHS recommends a structured approach to weight loss: a calorie deficit of around 500 kcal per day typically supports a loss of 0.5 to 1 kg per week—the safest sustainable rate. Combining reduced-calorie eating with increased physical activity produces better results than either alone.
For adults with a BMI of 30 or above, or 27 or above with weight-related health conditions, prescription weight loss medication like Mounjaro or Wegovy—combined with lifestyle changes—can significantly support weight management. Use our GLP-1 weight loss calculator to explore potential outcomes, and our BMI calculator to assess where you stand. Your GP can discuss which approach 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.
What is the best time of day to drink apple cider vinegar for weight loss?
There is no evidence that timing matters for apple cider vinegar. If consumed, it may have a slight effect on blood sugar when taken before meals, but the overall weight loss benefit is minimal. Consistent dietary changes and physical activity matter far more than when or if you consume vinegar.
Can apple cider vinegar replace prescription weight loss medication?
No. Apple cider vinegar is not a substitute for evidence-based weight management. If you are eligible for prescription weight loss treatment like Mounjaro or Wegovy, these medications have strong clinical trial evidence supporting significant weight loss alongside lifestyle changes. Speak to your GP about your options.
How much apple cider vinegar should you drink daily for weight loss?
There is no established safe or effective dose for weight loss. Some people consume 1–2 tablespoons diluted in water daily, but this has not been proven effective. Undiluted vinegar can damage tooth enamel and irritate the throat—always dilute it well if you choose to use it.
Is apple cider vinegar safe to drink every day?
For most people, small amounts of diluted apple cider vinegar are safe. However, it may interact with certain medications, including diabetes medicines and diuretics. If you take any prescription medications, speak to your GP before regularly consuming apple cider vinegar.
What is the most effective way to lose weight in the UK?
The most effective approach combines a reduced-calorie diet (aiming for 0.5–1 kg per week loss), regular physical activity, and where eligible, prescription weight loss treatment. Calculate your BMI using our free tool, then discuss your personalised options with your GP or an NHS weight management service.
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.