The UK's most complete GLP-1 guide
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- 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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How To Drink Green Tea For Weight Loss
Green tea contains compounds called catechins and caffeine that research suggests may modestly support weight management when combined with a reduced-calorie diet and increased physical activity. However, green tea alone is not a weight loss solution — it works best as part of a comprehensive approach to weight management uk. This guide explains how to drink green tea effectively, what the evidence actually shows, and how it fits into an nhs weight loss strategy alongside other proven methods.
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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.
How To Drink Green Tea Effectively For Weight Loss
To maximise the potential benefits of green tea for weight loss, follow these practical steps:
- Brew properly: Use water heated to 70–80°C (not boiling) and steep for 3–5 minutes. Boiling water destroys beneficial catechins.
- Drink 2–3 cups daily: Research suggests 2–3 cups per day (approximately 200–300mg of catechins) may offer modest metabolic support. More is not necessarily better.
- Drink before meals: Some evidence suggests consuming green tea 30 minutes before eating may help with appetite control.
- Avoid added sugar: Drink it plain or with lemon — added sugar cancels out any weight loss benefit.
- Consistency matters: Benefits emerge over weeks, not days. Regular consumption is more effective than occasional use.
- Stay hydrated overall: Green tea contributes to daily fluid intake, which supports metabolism and satiety.
Remember that green tea is a supplement to, not a replacement for, dietary changes and physical activity.
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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.
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What Does The Evidence Actually Show?
Clinical research on green tea and weight loss shows modest, realistic results. Meta-analyses suggest that green tea catechins may support a weight loss of approximately 1–3kg over 12 weeks when combined with calorie restriction — modest compared to other weight management approaches.
The effect size is small and varies between individuals. Green tea is not a prescription weight loss medication. If you're seeking more significant weight loss support, prescription weight loss medication options available through nhs weight loss services or private prescription weight loss uk may be more effective. Calculate your potential results using our GLP-1 weight loss calculator to compare approaches, and use our BMI weight loss guide to understand your starting point and health goals.
Green Tea Vs Prescription Weight Loss OptionsGreen tea offers a natural, low-cost approach with minimal side effects. However, its weight loss effect is modest — typically 1–3kg over 12 weeks alongside diet and exercise. In contrast, prescription glp-1 weight loss medications like Mounjaro and Wegovy show average weight loss of 15–21% of body weight in clinical trials, significantly greater than green tea alone.
For weight management uk, consider green tea as a supportive habit within a broader strategy that includes dietary changes, physical activity, and potentially prescription weight loss medication if clinically appropriate. Your GP can assess whether bmi weight loss medication is suitable for your individual circumstances. Green tea and medication are not mutually exclusive — they can work together as part of a comprehensive weight management plan.
- 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.
How much weight can you lose drinking green tea?
Research suggests green tea may support approximately 1–3kg of weight loss over 12 weeks when combined with a reduced-calorie diet and exercise. Results are modest and vary between individuals. Green tea alone, without dietary changes, shows minimal weight loss benefit.
When is the best time to drink green tea for weight loss?
Drinking green tea 30 minutes before meals may help with appetite control according to some studies. Consistently drinking 2–3 cups throughout the day is more important than the specific timing. Avoid consuming it late in the day due to caffeine content affecting sleep.
Does cold green tea work as well as hot green tea?
Both hot and cold-brewed green tea contain beneficial catechins, though extraction may be slightly better with hot water. The difference is minimal. Choose whichever method you'll drink consistently — consistency matters more than temperature.
Is green tea a substitute for prescription weight loss medication?
No. Green tea is a supportive habit offering modest weight loss (1–3kg), whilst prescription glp-1 medications show significantly greater results (15–clinically studied weight loss in trials). Green tea and medication can complement each other, but if substantial weight loss is needed, discuss prescription options with your GP.
Can green tea help with weight management alongside exercise and diet?
Yes. Green tea works best as part of a comprehensive weight management strategy including calorie reduction and physical activity. It's not a standalone solution but can support overall efforts. Calculate your starting point using our BMI calculator and track progress with our progress tracker.
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.