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
Best Teas for Weight Loss and Detox
Several teas have been studied for their potential role in weight management and overall health. While no tea alone causes significant weight loss, certain types may offer modest support alongside a balanced diet and increased physical activity. This guide covers the evidence behind popular weight loss teas, how they work, and realistic expectations for their benefits in your weight management uk journey.
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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.
Which Teas Have Evidence for Weight Loss?
Green tea is the most researched tea for weight loss. Studies suggest green tea catechins (antioxidants) may slightly increase fat burning and metabolism, though the effect is modest. A typical benefit might be an extra 70–100 calories burned daily. Oolong tea sits between green and black tea and may have similar metabolism-boosting properties.
Black tea contains polyphenols linked to improved gut health and metabolism support. Herbal teas like peppermint, ginger, and hibiscus don't directly burn fat but may help reduce bloating, support digestion, or reduce cravings when used instead of sugary drinks.
- Green tea: 2–3 cups daily, 3–4 weeks to see potential effects
- Oolong tea: similar dosing to green tea
- Ginger tea: may reduce appetite and bloating
- Peppermint tea: supports digestion and may reduce cravings
The key benefit is replacing high-calorie drinks (soft drinks, sugary coffee) with zero-calorie tea — this calorie reduction is where real weight loss comes from, not the tea itself.
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.
Reality Check: What Teas Cannot Do
No tea is a weight loss solution on its own. Tea cannot replace the fundamentals of nhs weight loss: a calorie deficit, balanced nutrition, and physical activity. If you're looking for prescription weight loss support, speak to your GP about options including glp-1 weight loss medications like Mounjaro or Wegovy, which work through a different mechanism than tea.
Teas claiming to "detox" or "flush toxins" are often misleading — your liver and kidneys handle detoxification. What teas genuinely do is provide hydration, antioxidants, and can replace calorie-dense drinks. Track your progress with our free progress tracker to see what actually moves the needle for your weight management goals.
- 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.
Can green tea really help me lose weight?
Green tea may offer modest support — studies suggest it slightly increases fat burning (roughly 70–100 extra calories daily). However, this effect is small. Real weight loss comes from a calorie deficit and lifestyle changes. Green tea is helpful when it replaces sugary drinks or as part of overall nhs weight loss strategies.
How much tea should I drink daily for weight loss?
For green or oolong tea, 2–3 cups daily is typical in studies. More than 5–6 cups daily may cause caffeine-related side effects. Herbal teas can be consumed freely. Remember: tea supports weight management uk only when combined with diet and exercise — it's not a standalone treatment.
Is "detox tea" actually effective?
No. "Detox" claims are largely marketing. Your body's organs (liver, kidneys) naturally detoxify. Teas with herbs like ginger or peppermint may aid digestion or reduce bloating, but they don't remove toxins. Choose teas for their genuine benefits (antioxidants, hydration, reduced cravings) rather than detox promises.
Should I use tea instead of prescription weight loss medication?
No. If your GP has recommended prescription weight loss uk options (like GLP-1 medications), tea is a supplement to, not a replacement for, medical treatment. Tea offers modest benefits; prescription medications work through appetite regulation and metabolic mechanisms. Discuss both options with your healthcare provider.
Can I use my BMI to decide if I need weight loss support?
Yes. Use our free BMI calculator to check where you fall on the NHS scale. If your BMI is 25 or above, discuss weight management options with your GP — this may include lifestyle changes, supported programmes, teas as habit support, or prescription weight loss medication depending on your health.
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.