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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Keto Diet Chart For Weight Loss For Females — UK Options
A keto diet chart can be a useful tool for weight loss, but it's not the only option available to women in the UK. If you're struggling to lose weight through diet alone, prescription weight management medication may help. This guide covers how keto works for weight loss, what UK-licensed prescription options are available to eligible women, and how to find out if you qualify for NHS support or private treatment. We'll also explain how these approaches can work together for better results.
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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.
UK Prescription Weight Loss Options For Women
If you're following a keto diet chart for weight loss and want additional support, the UK has three prescription-only medications licensed specifically for weight management uk. These are:
- Mounjaro (tirzepatide) — a once-weekly injection; clinical trials showed women lost an average of 15–21% of their body weight
- Wegovy (semaglutide) — a once-weekly GLP-1 injection; average weight loss around 15% body weight in trials
- Saxenda (liraglutide) — a daily injection; typically prescribed when other options aren't suitable
All three are prescription-only medicines requiring a clinical assessment before use. They work by reducing appetite and supporting you to eat smaller portions — complementing dietary changes like keto. Our GLP-1 weight loss calculator can help you estimate potential results at different doses, though individual outcomes vary significantly. These medications are most effective when combined with dietary changes and increased physical activity, not as replacements for them.
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.
NHS vs Private Access — How To Find Out If You're Eligible
NHS weight loss medication is available through specialist tier 3 weight management services if you meet eligibility criteria: BMI of 30 or above, or BMI 27–29.9 with weight-related health conditions like type 2 diabetes or high blood pressure. Ask your GP for a referral — though waiting lists vary significantly by region. Alternatively, prescription weight loss uk is available privately through GPhC-registered online pharmacies following a brief clinical consultation; this doesn't require NHS referral and typically takes 1–3 days. Check your bmi weight loss range using our free BMI calculator above to understand whether you might qualify. Either route requires a conversation with a prescriber to confirm suitability for your individual health.
- 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 combine a keto diet chart with weight loss medication?
Yes. Prescription weight management medication like Mounjaro or Wegovy works alongside dietary changes, not instead of them. Many women use keto or other reduced-calorie approaches with GLP-1 medication for better results. Always discuss your diet plan with your GP or prescriber before combining approaches.
What's the difference between Mounjaro and Wegovy for female weight loss?
Both are once-weekly injections. Mounjaro (tirzepatide) activates two hormone pathways (GIP and GLP-1), while Wegovy (semaglutide) activates GLP-1 only. Clinical trials show similar average weight loss (15–21%), but individual responses vary. Your prescriber will assess which suits you best.
How quickly can I expect to lose weight on prescription medication?
The NHS recommends losing 0.5–1 kg per week for sustainable results. Weight loss medication typically supports this rate when combined with diet and exercise changes. Results vary significantly between individuals — some women lose more, others less. Your prescriber can discuss realistic timescales for your situation.
Do I need to see my GP to get a keto diet or weight loss medication?
For keto, you can start independently, though it's wise to tell your GP if you have any health conditions. For prescription weight loss medication, a clinical assessment is mandatory — either through NHS referral or a private online prescriber. Your GP can advise on the best route for you.
What's the NHS process for accessing weight loss medication?
Ask your GP for a referral to your local tier 3 weight management service. They'll assess your BMI, health conditions, and suitability. Access varies by region; some areas have shorter waits than others. Private routes are faster (typically 1–3 days) but involve costs. Either way, a prescriber must confirm it's right for you.
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.