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
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Can Blueberries Help with Weight Loss?
Blueberries are nutritious and low in calories, making them a sensible choice for a healthy diet. However, no single food causes weight loss on its own — sustainable weight management requires a calorie deficit combined with physical activity. If you're looking to lose weight in the UK, there are evidence-based options available, from lifestyle changes to prescription weight loss medication. This guide covers what the research shows about blueberries, and explores the weight management uk options available to you.
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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.
Blueberries, Nutrition, and Weight Management
Blueberries are nutrient-dense: A 100g serving contains around 57 calories, 14g carbohydrates, and 2.4g fibre. They're rich in antioxidants and vitamin C, making them a healthy addition to any diet.
Do they cause weight loss? No food alone causes weight loss. Weight loss happens when you consume fewer calories than you burn — a calorie deficit. Blueberries can support this by being filling, low-calorie, and naturally sweet, potentially reducing cravings for higher-calorie snacks.
Evidence context: Studies show that including whole fruits like blueberries as part of a reduced-calorie diet supports sustainable eating patterns and cardiovascular health. However, eating blueberries without a calorie deficit will not result in weight loss.
- Fibre content helps with satiety (feeling full longer)
- Low glycaemic index supports steady blood sugar
- Natural sugars satisfy sweet cravings without processed alternatives
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.
NHS Weight Loss and Prescription Options in the UK
If you have a BMI of 30 or above (or 27+ with weight-related health conditions), prescription weight loss medication may be available to you through the NHS or private prescribing. The most widely used options are Mounjaro (tirzepatide) and Wegovy (semaglutide) — both GLP-1 weight loss injections licensed in the UK. These are used alongside diet and exercise, not instead of them.
Access routes: NHS access is through specialist weight management services (tier 3/4), with varying regional availability. Private prescribing is available through online clinical assessment. Try our GLP-1 weight loss calculator to see projected results at different doses, and use our BMI calculator to check your current status. Your GP can advise on eligibility for NHS options.
If you have a BMI of 30 or above (or 27+ with weight-related health conditions), prescription weight loss medication may be available to you through the NHS or private prescribing. The most widely used options are Mounjaro (tirzepatide) and Wegovy (semaglutide) — both GLP-1 weight loss injections licensed in the UK. These are used alongside diet and exercise, not instead of them.
Access routes: NHS access is through specialist weight management services (tier 3/4), with varying regional availability. Private prescribing is available through online clinical assessment. Try our GLP-1 weight loss calculator to see projected results at different doses, and use our BMI calculator to check your current status. Your GP can advise on eligibility for NHS options.
- 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.
Will eating blueberries alone help me lose weight?
No. Weight loss requires a calorie deficit — consuming fewer calories than you burn. Blueberries are nutritious and low-calorie, so they can support a healthy diet, but eating them without a calorie deficit won't result in weight loss. Combine blueberries with a reduced-calorie diet and physical activity for best results.
What's the best weight management approach in the UK?
The NHS recommends a combination of dietary changes, increased physical activity, and behavioural support. For those with a BMI of 30+, or 27+ with health conditions, prescription medications like Mounjaro or Wegovy may be available. Losing 0.5–1kg per week is considered sustainable. Speak to your GP about your options.
How do GLP-1 weight loss injections work?
GLP-1 medications like Wegovy and Mounjaro work by activating natural hormone pathways that regulate appetite and help you feel fuller. In clinical trials, they helped participants lose an average of 15–21% body weight, though individual results vary. They're prescription-only and require clinical assessment.
Am I eligible for prescription weight loss medication on the NHS?
You may be eligible if you have a BMI of 30 or above, or 27+ with weight-related health conditions (such as type 2 diabetes, high blood pressure, or sleep apnoea). Access is through specialist tier 3 weight management services, with availability varying by region. Contact your GP for a referral.
What's the difference between Mounjaro and Wegovy?
Both are prescription-only injections. Mounjaro (tirzepatide) is a dual GIP/GLP-1 agonist with a maximum dose of 15mg weekly. Wegovy (semaglutide) is a GLP-1 agonist with a maximum dose of 2.4mg weekly. Both require clinical assessment and are used alongside diet and exercise. Results vary individually.
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.