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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Good Snacks for Weight Loss — Practical UK Choices
Choosing the right snacks is one of the most practical ways to support sustainable weight loss. Rather than cutting snacks out entirely, selecting nutrient-dense, lower-calorie options helps you stay satisfied between meals whilst maintaining a calorie deficit. This guide covers evidence-based snacking strategies aligned with NHS weight management advice, helping you make choices that genuinely work for your lifestyle and health goals.
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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.
Best Snack Options for Weight Loss
Protein-rich snacks are particularly effective for weight loss because they keep you fuller for longer and help preserve muscle during dieting. Good options include Greek yoghurt (plain, unsweetened), hard cheeses in small portions, nuts and seeds (almonds, walnuts, sunflower seeds in controlled amounts), and boiled eggs. A small handful of nuts provides satisfying fats and protein.
Fruit and vegetable snacks are naturally lower in calories and high in fibre, supporting both weight loss and overall health. Apple slices with a tablespoon of almond butter, berries (blueberries, raspberries), carrot sticks with hummus, or a small banana all make excellent choices. These options provide volume and satisfaction without excessive calories.
- Cottage cheese with berries (approximately 100–150 kcal)
- Vegetable crudités with plain yoghurt-based dip (approximately 80–120 kcal)
- A small handful of mixed nuts (approximately 150–180 kcal)
- Oatcakes with peanut butter (approximately 120–150 kcal)
The key is pairing lower-calorie foods with protein or healthy fats to create snacks that genuinely satisfy hunger.
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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.
Snacking Strategy for Weight Management
Rather than eating snacks mindlessly, plan ahead by preparing portions and keeping them visible in your fridge. This removes the temptation to reach for less healthy alternatives. Drink water first when hunger strikes — thirst is often mistaken for hunger. Set a calorie target for snacks (approximately 100–150 kcal per snack works well for most adults aiming for weight loss) and track them using a food diary or app. If you're following NHS weight management guidance or using weight loss medication nhs services like GLP-1 injections, snacking becomes even simpler because the medication itself reduces appetite — but healthy snack choices still matter for overall nutrition and habit formation.
Remember that sustainable weight loss typically requires losing approximately 0.5–1 kg per week. Use our free BMI calculator to understand your current weight category and our progress tracker to log your snacking and weight changes over time.
Avoid snacks that are high in sugar, ultra-processed, or high in calories relative to their nutritional value. Shop-bought biscuits, sugary breakfast bars, crisps, and full-fat cheddar snack packs are typically poor choices for weight loss. Instead, focus on whole foods with recognisable ingredients. Drink water, herbal tea, or black coffee rather than sugary drinks — liquid calories add up quickly without providing satiety. If you're struggling with snack cravings despite dietary changes, this may be worth discussing with your GP, as it can indicate whether prescription weight loss approaches like glp-1 weight loss medication might be helpful alongside lifestyle changes.
Snacking doesn't need to be complicated — simple, whole-food choices combined with portion control and planning form the foundation of successful, sustainable weight management.
- 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 are the best low-calorie snacks for weight loss?
Greek yoghurt, berries, nuts in small portions, vegetable crudités with hummus, hard cheeses, boiled eggs, and apple slices with almond butter are all excellent low-calorie options. Aim for snacks combining protein or healthy fats with whole foods — these keep you fuller longer and support sustained weight loss alongside a reduced-calorie diet.
How many calories should a weight loss snack contain?
Typically, 100–150 calories per snack works well for most UK adults aiming for weight loss. This allows flexibility whilst maintaining a calorie deficit. If you're using weight loss medication like GLP-1 injections, your appetite naturally reduces, so you may find you snack less frequently overall.
Is snacking necessary for weight loss?
No — snacking is optional. Some people find planned, healthy snacks help them maintain energy and avoid overeating at meals. Others do better without snacks. The key is finding an approach that feels sustainable for you. Track your weight using our progress tracker to see what works for your body.
Can I snack if I'm taking Mounjaro or Wegovy?
Yes. Whilst GLP-1 medications like Mounjaro and Wegovy reduce appetite, healthy snacking can still play a role in overall nutrition and habit formation. Many people on these medications naturally snack less, but when they do, choosing nutrient-dense options is still important.
What snacks should I avoid for weight loss?
Avoid ultra-processed snacks high in sugar, refined carbohydrates, and calories with limited nutritional value — such as sugary breakfast bars, crisps, and shop-bought biscuits. Liquid calories from sugary drinks also add up without providing fullness. Focus on whole foods with recognisable ingredients instead.
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.