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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Overweight Man: Health Risks and Support in the UK
If you're an overweight man, understanding what this means for your health is an important first step. In the UK, a man with a BMI between 25 and 29.9 is classified as overweight according to NHS guidelines. While being overweight doesn't automatically mean you have health problems, it does increase your risk of developing certain conditions. This guide explains the health context, what support is available through the NHS, and the options available if you want to manage your weight.
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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.
Health Conditions Linked to Excess Weight
Carrying excess weight increases your risk of developing several serious health conditions. Men who are overweight have a higher risk of type 2 diabetes, with studies showing risk increases significantly at higher BMIs. Cardiovascular disease — including heart attack and stroke — is more common in overweight men, partly because excess weight often correlates with high blood pressure and abnormal blood fats.
Other weight-related health risks include:
- Obstructive sleep apnoea — breathing pauses during sleep, common in men with excess abdominal weight
- Certain cancers — including bowel, prostate, and liver cancer are linked to excess weight
- Joint problems — osteoarthritis, particularly in knees, hips, and lower back
- Non-alcoholic fatty liver disease — fat accumulation in the liver without alcohol consumption
- Erectile dysfunction — often linked to cardiovascular complications of excess weight
The good news is that even a 5-10% reduction in body weight can significantly lower these risks and improve overall health markers like blood pressure and blood sugar levels.
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.
Support and Next Steps for Overweight Men
The NHS offers a structured pathway for weight management. Your GP can assess your health, discuss your weight, and refer you to free NHS services if appropriate. Use the free BMI calculator on this page to check if you fall into the overweight category based on your height and current weight.
If you're interested in prescription weight loss support, you may be eligible for medication through NHS specialist services — particularly if you have weight-related conditions like high blood pressure or prediabetes. Private online prescribing is also available for eligible adults without NHS referral. Whatever your approach, sustainable weight loss combines dietary changes, increased physical activity, and support tailored to your situation. Your GP is the best starting point for personalised advice.
- 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 BMI counts as overweight for a man?
According to NHS guidelines, a BMI between 25.0 and 29.9 is classified as overweight for men of most ethnic backgrounds. For men of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower thresholds — a BMI of 23.0 to 27.4 is considered overweight. You can check your BMI instantly using our free calculator above.
Is being overweight always unhealthy?
Not necessarily — some overweight individuals have good health markers. However, being overweight does statistically increase your risk of type 2 diabetes, heart disease, high blood pressure, and other conditions. Your GP can assess your individual health profile beyond BMI, including waist circumference and blood pressure, to give personalised advice.
How much weight do I need to lose to see health benefits?
Research shows that losing just 5-10% of your body weight can meaningfully improve blood pressure, blood sugar control, cholesterol levels, and reduce strain on joints. For a man weighing 90kg, this means losing just 4.5-9kg could have noticeable health benefits. Even modest, sustained weight loss is more valuable than rapid loss.
Can I get weight loss medication through the NHS?
Yes, if you meet eligibility criteria. The NHS provides prescription weight loss medications through specialist tier 3 weight management services. Eligibility typically requires a BMI of 30 or above, or 27-29.9 with weight-related health conditions like diabetes or high blood pressure. Your GP can refer you, though waiting times vary by region.
What's the best approach to losing weight as a man?
Sustainable weight loss combines reduced-calorie diet, increased physical activity, and behavioural changes. The NHS recommends losing 0.5-1kg per week. For many men, a structured approach like the NHS Weight Loss Plan, working with a GP, or using a free progress tracker can help. Some men also benefit from prescription support if eligible. ```
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.