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
Green Tea Properties and Weight Loss — What the Evidence Shows
Green tea has been studied for its potential role in weight management, with research suggesting compounds like catechins and caffeine may offer modest metabolic benefits. However, green tea alone is not a weight loss solution and works best alongside a healthy diet and physical activity. If you're interested in weight management in the UK, understanding both natural approaches like green tea and prescription options can help you make informed decisions about your health.
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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.
How Green Tea May Support Weight Management
Green tea contains catechins — powerful antioxidants that research suggests may increase fat oxidation and thermogenesis (heat production in the body). The combination of caffeine and catechins, particularly EGCG (epigallocatechin gallate), may slightly boost metabolic rate.
- Studies show green tea drinkers may burn approximately 3–4% more calories at rest
- The effect is modest and most noticeable during physical activity
- Regular consumption (2–3 cups daily) appears necessary for any measurable benefit
- Weight loss from green tea alone typically ranges from 0.5–2 kg over 8–12 weeks in clinical trials
Green tea also contains L-theanine, an amino acid that promotes calm focus — potentially helpful for managing stress-related eating. However, these properties work best when combined with a reduced-calorie diet and regular exercise.
Clinically BackedWeight Loss
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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.
Green Tea vs. Evidence-Based Weight Loss Approaches
While green tea offers modest benefits, prescription weight loss medication and structured weight management programmes are significantly more effective. The NHS weight loss approach prioritises sustainable lifestyle changes first, with prescription options considered when BMI is 30 or above (or 27+ with weight-related health conditions).
If you're exploring weight management options in the UK, use our free BMI calculator to check your starting point, and our GLP-1 weight loss calculator to compare potential outcomes with evidence-based interventions. Green tea can support your overall wellness routine, but prescription medications and structured programmes offer more substantial, measurable results backed by clinical trials.
- 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.
Does green tea actually help you lose weight?
Green tea contains catechins and caffeine that may slightly increase metabolism and fat burning — approximately 3–4% more calories at rest. However, the effect is modest. Most studies show weight loss of 0.5–2 kg over 8–12 weeks when combined with diet and exercise. Green tea alone is not a weight loss solution.
How much green tea should you drink for weight loss?
Clinical studies typically used 2–3 cups daily (300–400 mg catechins) to observe measurable benefits. Drinking more than this offers no additional advantage and may cause side effects like caffeine sensitivity. Consistency matters more than quantity — regular daily consumption is more effective than occasional drinking.
How does green tea compare to prescription weight loss medication?
Green tea produces modest results (0.5–2 kg over weeks), while prescription medications like GLP-1 injections produce average weight loss of 15–20% of body weight. Prescription options require clinical assessment and medical supervision but are significantly more effective for meaningful weight management.
Can green tea replace prescription weight loss treatment?
No. Green tea supports general health and wellness but cannot replace evidence-based weight loss approaches. If your BMI is 30+ or 27+ with weight-related conditions, your GP can refer you to NHS weight management services where prescription options may be considered alongside lifestyle changes.
What are the side effects of drinking green tea daily?
Green tea is generally safe, but side effects from regular consumption can include caffeine sensitivity (jitteriness, sleep disruption), stomach upset on an empty stomach, and iron absorption interference in susceptible individuals. Limit to 3–4 cups daily and drink after meals to minimise effects.
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.