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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BMI of 26 for Females — What NHS Says
If you have a BMI of 26, you fall into the overweight category according to NHS guidelines. For women, a BMI of 26 is above the healthy weight range (18.5–24.9) but below the obese threshold. This means your weight carries some health risks, but there are practical steps you can take. Use our free BMI calculator above to check your personal BMI and explore what a healthy weight range might look like for your height.
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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.
NHS BMI Categories and What BMI of 26 Means
The NHS defines a BMI of 26 as overweight. According to NHS guidelines, a healthy BMI range for adults is 18.5–24.9. If you fall between 25.0–29.9, you are classified as overweight, and at 26, you are in the upper half of this range.
For women of South Asian, Chinese, Black African, or Black Caribbean heritage, NHS thresholds are slightly lower due to higher health risks at lower BMI levels. These groups should aim for a BMI between 18.5–22.9 to minimise cardiovascular and metabolic risk.
Key health considerations at BMI 26:
- Increased risk of type 2 diabetes
- Higher cardiovascular disease risk than healthy BMI ranges
- Possible impact on blood pressure and cholesterol
- Weight-related joint stress, especially on knees and hips
BMI is a useful screening tool, but remember it has limitations — it does not distinguish between muscle and fat, and does not account for where fat is stored. Waist measurement is also important: the NHS recommends women aim for a waist under 80cm (31.5 inches).
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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 Management Support and Next Steps
If you have a BMI of 26 and are concerned about your health, your first step is to speak with your GP. They can assess your individual health picture, including blood pressure, blood sugar levels, and family history of weight-related conditions.
NHS support options include:
- Tier 1: Free NHS Weight Loss Plan and community programmes
- Tier 2: Primary care weight management support through your GP
- Tier 3: Specialist multidisciplinary weight management services if needed
Even losing 5–10% of your body weight can reduce health risks significantly. Our progress tracker can help you log and monitor changes over time. Your GP can advise on sustainable diet and activity changes tailored to your circumstances.
- 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.
Is a BMI of 26 considered overweight?
Yes. According to NHS guidelines, a BMI of 26 falls in the overweight category (25.0–29.9). This is above the healthy range (18.5–24.9) but below the obese threshold (30+). Overweight status increases health risks but is not yet in the obese category.
What is a healthy BMI range for women in the UK?
The NHS healthy BMI range for most women is 18.5–24.9. If you are of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends aiming for 18.5–22.9 due to higher health risks at higher BMI levels for these groups.
What health risks are associated with a BMI of 26?
A BMI of 26 increases your risk of type 2 diabetes, cardiovascular disease, high blood pressure, high cholesterol, and joint problems. However, these risks are lower than at higher BMI levels. Even modest weight loss of 5–10% can reduce these risks significantly.
Should I see my GP if my BMI is 26?
If you have a BMI of 26 and are concerned, speaking with your GP is recommended. They can assess your individual health, check blood pressure and blood sugar, and discuss sustainable weight management options or lifestyle changes tailored to your needs.
Can I use the BMI formula to calculate my own BMI?
Yes. The BMI formula is weight (kg) ÷ height (m)². You can calculate it manually or use our free BMI calculator on this page for gradual improvement. Our calculator also shows your healthy weight range for your specific height.
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.