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
Is Matcha Good For Weight Loss?
Matcha is a popular green tea powder with potential health benefits, but it's not a weight loss solution on its own. While matcha may support weight management through metabolism and focus, sustainable weight loss requires dietary changes and physical activity. For adults in the UK struggling with weight management, prescription options like Mounjaro and Wegovy offer evidence-based support alongside lifestyle changes. This guide explains what matcha can and cannot do, and explores UK-licensed medication alternatives if you're eligible.
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 Science Say About Matcha and Weight Loss?
Matcha contains catechins (antioxidants) and L-theanine (an amino acid) that may offer modest metabolic benefits. Some studies suggest matcha can increase fat oxidation during exercise and slightly boost metabolism, but the effect is small — typically burning only 3–4% more calories. Matcha also contains caffeine, which may suppress appetite slightly and increase alertness. However, these effects are minimal compared to other weight loss interventions. The evidence does not support matcha as an effective weight loss tool on its own. Weight management in the UK typically requires a combination of reduced-calorie diet, increased physical activity, and sometimes prescription support.
- Catechins in matcha may increase fat oxidation by 10–17% during exercise
- Caffeine content (around 25–70mg per serving) may boost alertness and focus
- No clinical trials demonstrate significant weight loss from matcha alone
- Effect is far smaller than NHS-recommended dietary and activity changes
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.
UK Prescription Weight Loss Options for Eligible Adults
If you're overweight or obese and struggling with weight management in the UK, prescription medications may be an option. Mounjaro (tirzepatide) and Wegovy (semaglutide) are GLP-1 receptor agonist injections licensed in the UK for weight loss. In clinical trials, Mounjaro helped participants lose an average of 15–21% of body weight, and Wegovy approximately 15%, when used alongside a reduced-calorie diet and increased physical activity. Eligibility typically requires a BMI of 30 or above, or 27–29.9 with weight-related health conditions like type 2 diabetes, high blood pressure, or sleep apnoea. Use our free BMI calculator above to check your personal BMI, and our GLP-1 weight loss calculator to explore potential outcomes at different doses.
- Both available through NHS specialist services or private online prescribing
- Require a clinical assessment and prescription from a UK-licensed prescriber
- Used alongside dietary and lifestyle changes, not instead of them
- 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.
Is matcha better than green tea for weight loss?
Matcha and green tea contain similar catechins and caffeine. Matcha is a more concentrated form, but neither is an effective weight loss solution on their own. Both may provide small metabolic support alongside a healthy diet and exercise.
Can I lose weight just by drinking matcha?
No. While matcha has antioxidants and may slightly boost metabolism, clinical evidence shows it cannot produce meaningful weight loss without dietary changes and physical activity. Sustainable weight loss requires a calorie deficit.
What's the difference between matcha and prescription weight loss medication?
Matcha is a food supplement with minimal evidence for weight loss. Prescription medications like Mounjaro and Wegovy are clinically tested drugs that help regulate appetite and support weight loss alongside lifestyle changes. Results are significantly more substantial.
How do I know if I'm eligible for prescription weight loss medication in the UK?
You may be eligible if you have a BMI of 30 or above, or 27–29.9 with weight-related health conditions. Contact your GP or use our free BMI calculator to check your starting point. A prescriber will assess your individual circumstances.
Can I use matcha alongside prescription weight loss medication?
Matcha is safe to drink alongside prescription weight loss medication. However, it's not a substitute for the dietary changes and physical activity that support these medications. Discuss any supplements with your prescriber to ensure there are no interactions.
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.