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
Does Weight Loss Detox Tea Actually Work?
Weight loss detox tea is marketed as a natural way to shed pounds, but the evidence for its effectiveness is limited. While some herbal teas contain ingredients with mild metabolic benefits, detox tea alone is unlikely to produce significant weight loss. Sustainable weight management in the UK typically requires a calorie deficit, regular physical activity, and lifestyle changes. If you're looking for evidence-based weight loss support, your GP can discuss proven options including lifestyle interventions, prescription weight loss medication, or referral to NHS weight management services depending on your individual health needs.
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.
How Do Detox Teas Claim to Work?
Detox teas typically contain ingredients like green tea, ginger, turmeric, or dandelion root, promoted as "fat-burning" or "metabolism-boosting." The claimed mechanisms include:
- Green tea catechins — may offer a modest increase in fat oxidation, though clinical evidence shows minimal weight loss effect alone
- Caffeine content — can slightly increase energy expenditure, but the effect is small and temporary
- Digestive support — some ingredients may ease bloating or support digestion, creating a perception of weight loss without actual fat loss
- Appetite suppression — no strong evidence that herbal ingredients significantly reduce hunger
The reality: most detox teas produce no meaningful weight loss on their own. Any weight lost while drinking detox tea is more likely due to increased water intake, reduced calorie consumption from other sources, or placebo effect rather than the tea itself.
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.
Evidence-Based Alternatives to Detox Tea
If you're trying to lose weight, UK health services and clinical evidence support these approaches:
- Calorie deficit — the NHS recommends losing 0.5–1 kg per week, achieved through a 500 kcal daily deficit via diet and exercise
- NHS Weight Loss Plan — free, evidence-based 12-week programme available through tier 1 weight management services
- Prescription weight loss medication — if eligible (BMI ≥30 or ≥27 with weight-related health conditions), your GP can refer you to specialist weight management services where medications like GLP-1 injections may be considered. Our GLP-1 weight loss calculator can help you understand potential outcomes if you're exploring this option
- Behavioural support — working with a healthcare professional on sustainable dietary and lifestyle changes produces better long-term results
Use our free BMI calculator above to assess where you stand, then speak to your GP about the right approach for your situation.
- 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 help with weight loss?
Green tea contains catechins that may offer a very modest increase in fat burning — roughly 30–100 extra calories per day in some studies. This is far too small to produce meaningful weight loss alone. Green tea is healthy to drink, but don't expect weight loss results without a calorie deficit and exercise.
Is detox tea safe to drink?
Most herbal detox teas are safe for healthy adults in normal amounts. However, some ingredients can interact with medications or cause digestive upset in sensitive individuals. Always check ingredients and speak to your GP if you take medications or have underlying health conditions.
Why do people lose weight while drinking detox tea?
Weight loss often occurs because people drinking detox tea are also consuming more fluids (reducing thirst and food cravings), eating fewer calories overall, or exercising more. The tea itself typically isn't responsible — the lifestyle changes are. This is why sustainable weight management requires diet, activity, and behavioural change.
What's a proven weight loss method in the UK?
The NHS recommends a balanced diet with a 500 kcal daily deficit, regular physical activity, and behavioural support. For adults with a BMI ≥30 or ≥27 with weight-related health conditions, your GP can refer you to specialist weight management services where prescription weight loss medication may be available alongside lifestyle support.
Is prescription weight loss medication better than detox tea?
Yes — prescription weight loss medications like GLP-1 injections have strong clinical evidence. In trials, they help people lose 15–21% of body weight on average (alongside diet and exercise), compared to virtually zero reliable effect from detox tea. They require prescription and clinical assessment, but offer real results for eligible individuals.
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.