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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Is Beef Steak Good For Weight Loss?
Beef steak can be part of a weight loss plan, but it depends on portion size, cut, and how you prepare it. Steak is high in protein, which supports muscle maintenance during weight loss and helps you feel fuller for longer. However, steak is also calorie-dense and can be high in saturated fat depending on the cut. For sustainable weight loss in the UK, the NHS recommends a balanced approach combining dietary choices with physical activity. Whether steak fits your weight management plan depends on your overall calorie intake and health goals.
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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.
Beef Steak: Nutritional Breakdown For Weight Loss
Lean beef cuts are better choices for weight loss than fattier cuts. A 100g serving of lean sirloin steak contains approximately 180 calories, 26g of protein, and 8g of fat. Compare this to a fattier ribeye at around 250 calories and 20g of fat per 100g. Protein is particularly valuable during weight loss because it has a higher thermic effect (your body uses energy to digest it), helps preserve muscle mass, and increases satiety. However, a typical restaurant steak portion (200–250g) can contain 360–625 calories before any butter, sauce, or sides are added.
- Leanest cuts: Sirloin, fillet, lean rump — ideal for weight loss goals
- Moderate cuts: Ribeye, T-bone — higher fat but still protein-rich
- Preparation matters: Grilled or pan-fried without added butter is lower-calorie than butter-basted or fried
For weight loss to work, you need a calorie deficit — typically 500 kcal below your maintenance level for sustainable loss of around 0.5 kg per week according to NHS guidance. Steak can fit into this if portion-controlled and paired with lower-calorie vegetables rather than chips or creamy sauces.
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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.
Using Steak In Your Weight Loss Plan
To include beef steak in your weight loss plan, focus on portion control and lean cuts. A healthy portion is around 150g cooked weight (equivalent to a deck of cards size). Pair your steak with calorie-light sides: grilled vegetables, salad with vinaigrette, or cauliflower rice rather than chips. Avoid butter-basting, creamy sauces, and heavy gravies — season with herbs and spices instead. Track your total daily calories using our free progress tracker to ensure you're maintaining a deficit. If you're using prescription weight loss medication as part of your weight management plan, appetite reduction may make portion control easier naturally.
Remember that weight loss depends primarily on overall calorie intake rather than any single food. Use our BMI calculator to set a healthy weight target for your height, then work backwards to determine your calorie needs.
- 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.
How many calories are in a typical beef steak?
A 200g grilled sirloin steak contains approximately 360 calories, while a ribeye of the same size contains around 500 calories. Calories vary based on cut, cooking method, and added fats. Always account for any butter or sauce added during cooking.
Is steak better than chicken for weight loss?
Both steak and chicken are protein-rich. Lean beef steak (sirloin, fillet) has similar calories to skinless chicken breast, around 165 calories per 100g. Steak provides more iron and B vitamins, while chicken tends to be slightly lower in fat. Choose based on preference and calorie management.
Can I eat steak while using Wegovy or Mounjaro?
Yes. If you're using prescription weight loss injections, lean steak can be part of your diet. GLP-1 medications reduce appetite, so portion control becomes easier. Always follow your prescriber's dietary guidance and ensure balanced nutrition with vegetables and whole grains.
What's the best way to cook steak for weight loss?
Grill, pan-fry, or bake steak without added oil or butter for the lowest-calorie option. Avoid frying in butter or adding creamy sauces. Season with herbs, garlic, and spices instead. Lean cuts cooked simply are ideal for weight loss while keeping nutritional value high.
How does steak fit into NHS weight loss guidance?
The NHS recommends a balanced diet with adequate protein during weight loss. Lean steak supports this as a protein source, but you must stay within your calorie target. Use our weight loss calculator to estimate your calorie needs and plan portions accordingly. ```
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.