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
Weight Health for Black Men in the UK
Black men in the UK face disproportionately higher health risks related to excess weight compared to other populations. The NHS recognises this and recommends lower BMI thresholds for people of Black African and Black Caribbean heritage, reflecting evidence that weight-related conditions like type 2 diabetes and cardiovascular disease occur at lower BMI levels in these groups. Understanding your personal health context and having access to accurate UK health information is the first step toward sustainable weight management.
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.
NHS Ethnic-Adjusted BMI Thresholds for Black Men
The NHS recommends different BMI categories for Black men compared to European populations. Instead of the standard healthy weight range of 18.5–24.9, the NHS advises that Black men should aim for a BMI of 18.5–22.9. This means:
- Healthy weight: BMI 18.5–22.9
- Overweight: BMI 23.0–27.4
- Obese: BMI 27.5 and above
This ethnic-adjusted guidance exists because research shows Black men have a significantly higher risk of developing type 2 diabetes, high blood pressure, and heart disease at the same BMI as other populations. Your GP can discuss what a healthy weight range means specifically for you. Use our free BMI calculator above to check your current BMI and see where you sit according to NHS guidelines — the calculator can be adjusted for ethnic background.
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.
Health Risks and Weight Management Support in the UK
Excess weight in Black men is linked to increased risk of type 2 diabetes (which Black men develop at rates up to 3 times higher than white British men), heart disease, high blood pressure, and certain cancers. The good news is that even modest weight loss—as little as 5–10% of body weight—can significantly improve these health markers. Your GP can refer you to NHS-funded weight management services, including specialist tier 3 services that may offer prescription weight loss support. These services combine dietary advice, physical activity support, and where appropriate, medications like GLP-1 injections. Track your progress using our free progress tracker, and use our weight converter tool to monitor your weight in stone, kilograms, or pounds—whichever you prefer.
- 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.
What is the healthy BMI range for Black men according to the NHS?
The NHS recommends a healthy BMI of 18.5–22.9 for Black men, lower than the standard 18.5–24.9 used for other populations. This reflects evidence that Black men face higher health risks from weight-related conditions at lower BMI levels. Your GP can help interpret your personal BMI and discuss whether your weight poses health risks.
Why do Black men have different BMI thresholds?
Research shows that Black men develop type 2 diabetes, high blood pressure, and cardiovascular disease at lower BMI levels compared to other ethnic groups. This is due to genetic and metabolic factors. The ethnic-adjusted thresholds help ensure earlier intervention and more personalised health guidance.
How can I access weight loss support through the NHS?
Start by speaking to your GP about weight management. You may be referred to a tier 3 specialist weight management service, which provides multidisciplinary support including dietitian advice, physical activity programmes, and where appropriate, prescription weight loss medications. Availability varies by region—ask your GP what's available in your area.
What weight loss methods are evidence-based for Black men?
The NHS recommends losing weight at a rate of 0.5–1 kg per week through a combination of reduced-calorie diet, increased physical activity, and behaviour change support. For those with a BMI over 27.5 or comorbidities like diabetes, prescription GLP-1 medications (such as Mounjaro or Wegovy) may be appropriate following clinical assessment.
Can I use the BMI calculator on this site if I'm a Black man?
Yes—our free BMI calculator includes the option to adjust for ethnic background, including Black African and Black Caribbean heritage. This will show you your BMI relative to NHS ethnic-adjusted thresholds, giving you a more personalised picture of your weight health in a UK context.
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.