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
Are Pistachios Healthy For Weight Loss?
Pistachios can be a helpful snack when managing your weight, but portion control is essential. These nuts are nutrient-dense and protein-rich, which can help you feel fuller for longer — a key part of successful weight management in the UK. However, they're also calorie-dense, so understanding serving sizes and how they fit into your overall calorie intake is crucial. Whether you're following NHS weight loss guidance or using weight management tools like our free BMI calculator, knowing which foods support your goals makes a real difference to sustainable results.
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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.
Nutritional Benefits of Pistachios for Weight Management
Pistachios offer several nutritional advantages for weight management. A typical 28g serving (around 23 kernels) contains approximately 160 kcal, 6g of protein, and 3g of dietary fibre. The high protein content supports satiety — helping you feel fuller after eating — which can reduce overall calorie intake throughout the day. The fibre aids digestive health and blood sugar stability, both important for sustainable weight loss.
Pistachios also contain heart-healthy monounsaturated fats and are rich in vitamin E, magnesium, and potassium. Unlike heavily processed snacks, nuts provide sustained energy without rapid blood sugar spikes. However, it's easy to overconsume pistachios because they're delicious and convenient. The key to including them in a weight management plan is measuring portions carefully and counting them within your daily calorie allowance — essential whether you're following NHS weight loss guidance or working with a prescriber on prescription weight loss medication.
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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.
Portion Control and Calorie Awareness
A standard serving of pistachios is 28g (about a small handful or 23 kernels), providing roughly 160 kcal. To fit pistachios into weight management, measure them beforehand rather than eating directly from the bag — this prevents unintentional overconsumption. If you're tracking calories for weight loss in the UK, log your pistachio portions accurately using a food tracking app or food diary.
Combine pistachios with protein-rich foods like Greek yoghurt or cottage cheese to maximise satiety. Avoid salted or honey-roasted varieties when possible, as added sugars and sodium increase calorie content. Try our free weight loss calculator to understand your overall calorie needs, and use our progress tracker to monitor how dietary changes support your goals over time.
- 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 pistachios help with weight loss?
Pistachios can support weight loss when eaten in controlled portions. Their protein and fibre content promotes fullness, potentially reducing overall calorie intake. However, because they're calorie-dense at 160 kcal per 28g serving, careful portion control is essential. They work best as part of a balanced, reduced-calorie diet rather than as a weight loss solution on their own.
How many pistachios should I eat per day for weight loss?
A single serving is 28g (approximately 23 kernels), containing around 160 kcal. For weight loss, measure out one serving at a time rather than snacking from the bag. Your total daily pistachio intake depends on your overall calorie goal — consult the NHS weight loss guide or use a calorie tracking app to determine how pistachios fit into your personal plan.
Are pistachios better than other nuts for weight loss?
Pistachios are comparable to other nuts nutritionally. Almonds, walnuts, and cashews have similar calorie densities (160–200 kcal per 28g). The best choice is whichever nut you enjoy eating in measured portions. Pistachios' shells require cracking, which naturally slows eating and can increase satiety compared to shelled nuts.
Can I eat pistachios while taking weight loss medication?
Yes, pistachios can be part of a balanced diet alongside prescription weight loss medications like Mounjaro or Wegovy. These medications are designed to work alongside dietary changes, not replace them. Always combine any weight management medication with a reduced-calorie diet and increased physical activity for best results. Your prescriber will advise on overall nutrition.
What's the difference between salted and unsalted pistachios for weight loss?
Nutritionally, unsalted and salted pistachios have similar calories and macronutrients. However, excess salt can increase thirst and water retention, potentially masking true weight loss progress. Unsalted varieties may support better satiety without the added sodium. Check food labels carefully — some flavoured pistachios contain added sugars that significantly increase calorie content.
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.