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
Do Juice Detox Recipes Help With Weight Loss?
Juice detox recipes are popular in weight management discussions, but the evidence for their effectiveness is limited. While fresh fruit and vegetable juices contain nutrients, most detox claims lack scientific support. The NHS recommends sustainable dietary changes and calorie deficit as the foundation for weight loss in the UK. Our free BMI calculator can help you establish your starting point, and understanding your current weight management status is essential before exploring any dietary approach.
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.
What The Evidence Shows About Juice Detoxes
Juice detox programmes typically claim to "cleanse" the body or jumpstart weight loss, but clinical evidence is weak. Research shows that juice-only approaches often lead to short-term water loss rather than sustainable fat loss. The NHS emphasises that the body has its own detoxification systems (liver, kidneys) that don't require special diets.
- Most commercial detox juices are high in natural sugars — a 250ml serving can contain 20–30g of sugar
- Removing solid food reduces fibre intake, affecting digestion and satiety
- Initial weight loss is typically water and glycogen, not fat loss
- Rapid calorie restriction can trigger metabolic adaptation and rebound eating
For sustainable nhs weight loss outcomes, the NHS recommends a moderate calorie deficit (around 500 kcal per day) with balanced nutrition — not extreme restrictions. Our free weight converter and progress tracker help you monitor realistic goals over time.
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.
Better Alternatives For Sustainable Weight Loss
Instead of juice detoxes, evidence-based weight management uk strategies include whole-food diets with adequate protein, fibre, and micronutrients. A balanced reduced-calorie diet typically results in 0.5–1 kg weight loss per week, which is the NHS-recommended sustainable rate.
For some UK adults, prescription weight loss medication may be appropriate. GLP-1 medications like Wegovy (semaglutide) have demonstrated clinical efficacy in weight loss trials alongside dietary changes. These require GP assessment or private clinical evaluation. Try our GLP-1 weight loss calculator to explore potential outcomes if medication is suitable for you, and discuss options with your GP for personalised weight loss medication nhs access.
Your GP can also refer you to NHS tier 3 weight management services for specialist support. Whether through diet alone, lifestyle changes, or with medical support, sustainable approaches outperform detox trends long-term. Use our BMI calculator to track your baseline and progress — consistent monitoring is key to successful, maintainable weight loss.
- 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.
Do juice cleanses actually detoxify your body?
No — your body detoxifies itself through the liver and kidneys without requiring special juices or supplements. Commercial detox claims lack scientific evidence. The NHS recommends a balanced diet and adequate water rather than juice-only regimens for health and weight management.
Can juice detox recipes cause weight loss?
Juice detoxes may cause short-term weight loss due to low calorie intake and water loss, but this is not sustainable fat loss. Once normal eating resumes, weight typically returns. The NHS recommends a moderate 500 kcal daily deficit with balanced nutrition for sustainable weight loss of 0.5–1 kg per week.
Are juice detoxes safe for everyone?
Juice-only diets can cause nutrient deficiencies, low energy, and blood sugar instability, especially for people with diabetes or taking medications. They're not recommended by the NHS. Anyone considering significant dietary changes should consult their GP first, particularly if taking prescription medications.
What's better than juice detox for weight loss?
Sustainable approaches include balanced reduced-calorie diets, increased physical activity, behaviour change, and for eligible UK adults, prescription weight loss medication like GLP-1 injections. Your GP can assess what's appropriate for you. Use our BMI calculator to establish your baseline for any weight loss plan.
Can juice detox replace weight loss medication?
Juice detoxes and medication work differently. Medication (like Wegovy) has clinical evidence backing weight loss when combined with lifestyle changes. Detoxes lack evidence. If you're interested in medication options for weight management, discuss eligibility with your GP — prescription weight loss treatment requires clinical assessment.
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.