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
Top Rated Weight Loss Tea — What Works in the UK?
Weight loss tea is popular in the UK, but what does the science actually say? While many teas are marketed for weight management, their effects are modest at best. This guide explains which teas have evidence behind them, how they work, and — most importantly — what actually drives sustainable weight loss. If you're looking at weight loss options, understanding the reality about tea alongside other proven methods will help you make informed choices about your health.
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.
Which Weight Loss Teas Have Evidence Behind Them?
Several types of tea have been studied for weight management benefits in the UK and globally:
- Green tea — Contains catechins and caffeine. Research suggests modest fat oxidation support, though effects are small (typically 1–3 kg over several months when combined with calorie reduction)
- Oolong tea — May support metabolism slightly more than green tea. Evidence is limited but shows potential for modest weight loss in some studies
- Black tea — Contains polyphenols which may support metabolism, though evidence is weaker than green tea
- Herbal blends — Often contain ingredients like ginger, turmeric, or cinnamon. While these have anti-inflammatory benefits, weight loss evidence is limited
Important context: Any weight loss from tea is typically small and requires a calorie deficit to work. Tea alone will not produce significant weight loss without dietary and lifestyle changes. If you're focused on weight management UK strategies, combining any tea with a reduced-calorie diet and increased physical activity is essential.
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.
Real Weight Loss — What Actually Works?
If you're serious about weight loss, evidence-based approaches are more effective than tea alone. These include:
- Calorie deficit — A 500 kcal daily deficit typically produces 0.5 kg weight loss per week
- NHS weight loss programmes — Free structured support through your GP
- Prescription weight loss medication — For eligible adults, prescription weight loss options like GLP-1 injections (Mounjaro and Wegovy) have shown significant results in clinical trials
- Lifestyle changes — Consistent diet and exercise changes produce the most sustainable results
Use our free BMI calculator above to understand your current weight status, and our GLP-1 weight loss calculator to explore what glp-1 weight loss outcomes might look like for you personally. These tools help clarify what approach suits your situation best.
- 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 weight loss tea actually work?
Weight loss teas like green tea can support modest fat oxidation when combined with a reduced-calorie diet, but effects are small — typically 1–3 kg over several months. Tea alone will not produce significant weight loss. Any benefits depend on maintaining a calorie deficit through diet and exercise.
What's the best weight loss tea in the UK?
Green tea has the strongest evidence, followed by oolong tea. Both contain compounds that may slightly boost metabolism. However, differences between teas are small. Regular tea consumption combined with a healthy diet is more important than choosing a specific "best" tea.
Can I use weight loss tea instead of other methods?
No. Weight loss tea works only when combined with a reduced-calorie diet and physical activity. For people with a BMI over 30 or 27–29.9 with weight-related health conditions, NHS weight loss programmes or prescription weight loss options may be more effective than tea alone.
Is weight loss tea safe?
Green, oolong, and black tea are safe for most adults. However, excessive caffeine can cause sleep disruption, anxiety, or digestive issues in some people. If you have a medical condition or take medications, ask your GP before significantly increasing tea consumption.
What's more effective — tea or weight loss injections?
Weight loss injections uk like Mounjaro and Wegovy show significantly greater results than tea. Clinical trials show average weight loss of 15–21% body weight with Mounjaro and 15% with Wegovy, compared to 1–3 kg from tea. However, injections require a prescription and clinical assessment. Your GP can advise which approach suits you.
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.