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 Shilajit Help With Weight Loss?
Shilajit is a natural mineral substance used in traditional medicine, but scientific evidence for weight loss is limited. While some studies suggest it may support metabolism and energy levels, there's no strong clinical proof it causes significant weight loss. If you're looking for evidence-based weight loss support in the UK, prescription medications and lifestyle changes have much stronger evidence. Let's explore what shilajit actually does and how it compares to proven weight management approaches.
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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.
What Does the Evidence Show About Shilajit?
Shilajit is a sticky, tar-like substance found in high mountain regions, traditionally used in Ayurvedic medicine. Some small studies suggest it may help with energy production and mitochondrial function, which could theoretically support metabolism. However, clinical trials specifically testing shilajit for weight loss in humans are very limited.
Most research focuses on its mineral content and antioxidant properties rather than direct fat loss effects. Studies showing weight-related benefits often involve small sample sizes and lack rigorous control. In the UK, the NHS does not recommend shilajit as a weight loss treatment, and it's not regulated with the same standards as prescription medicines. If you're considering natural supplements alongside weight loss efforts, always discuss this with your GP first — some supplements can interact with medications or affect existing health conditions.
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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.
Evidence-Based Weight Loss Options in the UK
If you're serious about weight loss, the NHS recommends starting with calorie deficit through balanced eating and increased physical activity — even a 5–10% reduction in body weight can improve health markers like blood pressure and blood sugar control. For those who need additional support, prescription weight loss injections like GLP-1 medications have strong clinical evidence. Try our free GLP-1 weight loss calculator to see what results might be possible with evidence-based treatments, or use our BMI calculator to check your starting point. Your GP can assess whether prescription weight management is right for you, or recommend NHS tier 1 or 2 weight management services in your area.
- 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 shilajit actually help you lose weight?
There's limited scientific evidence that shilajit causes significant weight loss. Small studies suggest it may support energy and metabolism, but no large-scale clinical trials specifically prove weight loss effects in humans. It should not be relied on as a primary weight loss treatment.
Is shilajit safe to take for weight loss?
Shilajit appears generally safe for most people, but it's not regulated as strictly as prescription medicines in the UK. It can interact with some medications and health conditions. Always check with your GP before taking any supplement, especially if you're on prescription medicines or have existing health conditions.
What's more effective — shilajit or prescription weight loss medication?
Prescription weight loss medications like GLP-1 receptor agonists have strong clinical evidence from large trials showing significant weight loss results. Shilajit has minimal proven weight loss effects. Evidence-based approaches like calorie deficit, physical activity, and prescription medication (where appropriate) are far more likely to produce results.
Can I use shilajit alongside my weight loss efforts?
While shilajit itself may not cause weight loss, supporting your energy and overall health could help you stay motivated for diet and exercise. However, always discuss any supplements with your GP first to check for interactions with other medicines or health conditions.
What weight loss options does the NHS recommend?
The NHS recommends starting with a balanced diet and increased physical activity to achieve a calorie deficit. For eligible adults, NHS specialist weight management services can prescribe medications like GLP-1 injections. Refer to your GP to discuss options appropriate for your health situation and local availability.
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.