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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Does Matcha Tea Help Weight Loss?
Matcha tea contains caffeine and catechins, compounds that some research suggests may support modest weight loss. However, the evidence is limited and the effect is small compared to prescription weight loss medication or structured weight management programmes. If you're considering weight loss, it's important to understand what actually works according to NHS guidelines and what science truly shows about supplements like matcha.
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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 Research Show About Matcha and Weight Loss?
Several studies have examined matcha tea and weight loss, with mixed results. Matcha contains catechins — compounds found in green tea that may increase fat oxidation and boost metabolism slightly. A 2008 meta-analysis suggested green tea catechins could contribute to modest weight loss of around 1.3 kg over 12 weeks when combined with calorie restriction.
- Caffeine in matcha may increase energy expenditure by 3–11% temporarily
- Catechins may enhance fat burning during exercise
- Effects are typically small and most noticeable when combined with a reduced-calorie diet and physical activity
However, matcha alone is not effective for significant weight loss. The NHS emphasises that sustainable weight management requires a calorie deficit alongside consistent physical activity — something a cup of matcha cannot provide on its own.
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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.
How Does Matcha Compare to Actual Weight Management Options?
If you're looking for serious weight loss support, matcha is far less effective than evidence-based approaches. The NHS weight loss pathway recommends starting with lifestyle changes: reduced-calorie diet and increased physical activity, targeting 0.5–1 kg weight loss per week.
For those who meet NHS criteria, prescription weight loss medication (such as GLP-1 injections) offers significantly stronger support — clinical trials show weight loss averaging 15–21% of body weight when combined with lifestyle changes. Try our free GLP-1 weight loss calculator to understand what prescription weight loss medication might achieve compared to diet alone. A GP can also assess whether you're eligible for prescription options through NHS weight management services.
Calculate your BMI using our free BMI calculator above to understand your starting point, then discuss realistic weight loss options with your GP. Matcha can be part of a healthy lifestyle — it contains antioxidants and is a lower-calorie alternative to sugary drinks — but should never be relied upon as a primary weight loss tool. Focus instead on calorie deficit, physical activity, and professional support where needed.
- 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 drinking matcha tea alone help me lose weight?
No. While matcha contains compounds that may slightly increase metabolism, the effect is too small for meaningful weight loss on its own. You need a calorie deficit (eating fewer calories than you burn) through diet and exercise. Matcha can support overall health but isn't a weight loss solution by itself.
How much weight can I lose with matcha if I also diet?
Research suggests matcha contributes to only very modest weight loss — perhaps 0.5–1.5 kg over several weeks — when combined with a reduced-calorie diet. The weight loss comes primarily from the diet, not the matcha. For significant results, focus on creating a sustainable calorie deficit and increasing physical activity.
Is matcha better for weight loss than prescription weight loss injections?
No. Prescription GLP-1 medications like Wegovy (semaglutide) help people lose an average of 15% of body weight in clinical trials — far more than matcha. However, GLP-1 medications require a prescription and clinical assessment through your GP or a private prescriber, and work best alongside diet and exercise.
Can I drink matcha instead of seeing my GP about weight loss?
No. If you're struggling with weight, your GP can assess your health, calculate your BMI, discuss underlying causes, and recommend appropriate support — whether that's lifestyle changes, referral to NHS weight management services, or prescription medication. Matcha is not a substitute for professional guidance.
What's a realistic weight loss goal if I diet, exercise, and drink matcha?
Following NHS guidance — reduced-calorie diet plus regular physical activity — you can expect to lose 0.5–1 kg per week. Matcha may contribute minimally to this (less than 0.1 kg per week). The key is consistency with your diet and exercise, not the matcha. Track your progress using our free progress tracker to stay motivated.
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.