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
What Tea Helps With Weight Loss?
Several types of tea may offer modest support for weight loss, though no tea alone is a substitute for a balanced diet and physical activity. Green tea, black tea, and oolong tea contain compounds that may slightly boost metabolism and fat burning. However, if you're looking for structured weight management in the UK, prescription weight loss injections like Mounjaro or Wegovy may be more effective alongside lifestyle changes. Tea can be a calorie-free, healthy beverage choice as part of an overall weight management plan, but realistic expectations are important — results vary significantly between individuals.
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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 May Support Weight Loss?
Green tea contains catechins and caffeine, compounds that may slightly increase fat oxidation and thermogenesis (heat production). Research suggests modest benefits — typically a few hundred extra calories burned per day at best. Oolong tea sits between green and black tea and may have similar modest effects. Black tea also contains caffeine and polyphenols, which may offer minor metabolic benefits. Herbal teas like peppermint or ginger are calorie-free alternatives but lack strong weight loss evidence. The key is consistency — drinking tea regularly as part of a reduced-calorie diet and increased physical activity may help. For more significant weight management in the UK, you may want to use our free BMI calculator to assess your current health status, or explore prescription weight loss medication through your GP. Tea works best as a supportive beverage, not a primary weight loss tool.
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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.
Tea as Part of a Broader Weight Loss Strategy
Tea alone will not produce meaningful weight loss without dietary and lifestyle changes. The NHS recommends losing weight at a rate of 0.5 to 1 kg per week through a combination of reduced-calorie diet and increased physical activity. Tea can be a helpful addition — it's calorie-free (without sugar or milk), supports hydration, and may offer minor metabolic benefits. However, if you're significantly overweight or obese, prescription weight loss approaches may be more effective. Try our GLP-1 weight loss calculator to understand how prescription medication might fit your personal weight management goals. Remember, sustainable weight loss requires consistent effort across diet, activity, and sometimes medical support. Always consult your GP before making major changes to your diet or considering prescription weight loss medication.
- 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 that may slightly boost fat burning and metabolism. Clinical evidence suggests modest benefits — potentially a few hundred extra calories burned daily. However, it's not a substitute for calorie deficit and exercise. Green tea works best as part of a comprehensive weight management plan, not as a standalone solution.
Can you drink unlimited tea while trying to lose weight?
Yes, unsweetened tea is calorie-free and can be enjoyed freely. However, adding sugar, honey, or milk increases calories significantly. Excessive caffeine intake (over 400mg daily) may cause side effects. Plain green, black, or oolong tea supports hydration without affecting weight loss efforts negatively.
Is tea more effective than prescription weight loss medication?
No. Prescription weight loss injections like Mounjaro and Wegovy are significantly more effective for meaningful weight loss in the UK. Clinical trials show these medications help patients lose 15–21% of body weight on average. Tea may support modest additional benefits but cannot match prescription medication's impact.
What's the best time of day to drink tea for weight loss?
There's no specific "best time" — consistency matters more than timing. Drinking tea throughout the day supports hydration and may provide minor metabolic benefits whenever consumed. Avoid tea late in the evening if you're caffeine-sensitive, as it may affect sleep quality.
Are there other beverages that support weight loss better than tea?
Water is the best choice for weight loss — it's calorie-free and essential for metabolism. Black coffee and unsweetened tea offer similar benefits with minimal calories. Avoid sugary drinks, energy drinks, and alcohol, which add significant calories. Focus on hydration and calorie deficit as your primary weight management strategy.
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.