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
How Your Job Affects Weight Loss
Your job can significantly impact your ability to lose weight. Work stress, shift patterns, sedentary roles, and irregular meal times all affect weight management. Understanding how your employment influences your health—and knowing what evidence-based support is available—helps you make informed decisions about sustainable weight loss. Whether you're looking at NHS weight management UK options or prescription weight loss medication, your work situation matters when planning your 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.
How Work Affects Weight Loss Success
Several workplace factors directly influence weight loss outcomes:
- Shift work and irregular hours: Disrupted sleep patterns and inconsistent meal times increase appetite hormones (ghrelin) and reduce fullness signals (leptin), making weight loss harder. Night shifts particularly increase metabolic stress and snacking.
- Desk-based roles: Sedentary jobs reduce daily movement and calorie expenditure. Most office workers are inactive for 7–8 hours daily, increasing obesity risk.
- Work stress: Chronic workplace stress elevates cortisol, which promotes fat storage around the abdomen and increases cravings for high-calorie foods.
- Irregular eating patterns: Jobs with unpredictable breaks make meal planning difficult, leading to reliance on convenience foods high in salt and sugar.
- Limited gym access: Long commutes or inflexible schedules reduce time for physical activity, essential for sustainable weight loss.
Use our free BMI calculator above to check your current weight status, then explore how your work routine fits into a realistic weight loss plan.
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.
Weight Loss Solutions for Your Work Situation
Practical changes you can make: Pack healthy meals the night before, use lunch breaks for short walks, set drink reminders to stay hydrated, and find micro-movement opportunities during your day. If lifestyle changes alone aren't enough, GLP-1 weight loss medications like semaglutide (Wegovy) may help alongside these adjustments—clinical trials showed average weight loss of around 15% body weight.
Our GLP-1 weight loss calculator can help you estimate potential results if you're eligible for prescription weight loss medication. Access through NHS weight loss services or private prescribing allows flexibility around your work schedule. Your GP can assess whether prescription weight loss treatment suits your situation. Even clinically studied weight loss improves health significantly.
- 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.
Can I lose weight while working long hours?
Yes, but it requires realistic planning. Focus on sleep quality, meal prep on days off, and shorter workouts (15–20 minutes) rather than expecting hour-long gym sessions. Prescription weight loss medication can support you alongside lifestyle changes if you're eligible. Discuss your work schedule with your GP or a weight management specialist.
Does night shift work make weight loss impossible?
Night shift work makes weight loss harder due to disrupted sleep and appetite hormones, but not impossible. Prioritise consistent sleep patterns on your days off, eat protein-rich meals, avoid caffeine near sleep time, and maintain regular meal timing. If struggling, weight loss medication may help—ask your GP about options suitable for shift workers.
Can I use GLP-1 weight loss medication while working full-time?
Yes. Wegovy and Mounjaro are once-weekly injections you can administer at home, fitting easily around work schedules. Side effects like nausea usually settle within days. The medication works alongside your daily routine—not instead of it. You'll still need a reduced-calorie diet and activity increase for best results.
What's the realistic weight loss rate while working?
NHS guidance recommends losing 0.5–1 kg per week for sustainable results. With work pressures, aim for 0.5 kg weekly—that's about 2 kg monthly. Using our progress tracker can help you monitor realistic targets without pressure. Consistency matters more than speed.
Should I tell my employer about weight loss medication?
No—weight loss medication is personal medical information. Your employer doesn't need to know. If you experience side effects affecting work (nausea, fatigue), discuss reasonable adjustments with occupational health if needed. Your medication remains confidential between you and your prescriber.
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.