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
Does Chromium Help with Weight Loss?
Chromium is a trace mineral found naturally in foods like broccoli, green beans, and whole grains. Some people take chromium supplements hoping to support weight loss, but the scientific evidence for its effectiveness is limited and mixed. If you're exploring weight loss options, understanding what chromium can and cannot do is important for making informed health decisions alongside other proven strategies like diet, exercise, and NHS-approved weight management approaches.
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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.
What Does the Evidence Actually Show?
Clinical trials on chromium for weight management have produced inconsistent results. Some small studies suggest chromium picolinate (the most common supplement form) may help slightly reduce appetite or support modest weight loss — typically in the range of 1–3 kg over several months — but these effects are often minimal and not statistically significant across larger populations.
- A 2013 review in the journal Obesity found chromium supplements may help reduce body weight and fat mass, but the overall effect size was small
- Many studies were short-term (8–16 weeks) with small sample sizes, making it difficult to draw firm conclusions
- Results vary significantly between individuals — some people experience no noticeable effect
- The NHS does not currently recommend chromium as a weight loss treatment
For weight management in the UK, NHS-approved approaches focus on calorie reduction, increased physical activity, and where appropriate, prescription medications through specialist services. If you're considering any supplement, discuss it with your GP first.
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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.
Chromium vs. Proven Weight Loss Methods
If you're looking for evidence-based weight loss support, prescription weight loss injections like GLP-1 medications have much stronger clinical evidence. These medications work through different mechanisms — regulating appetite hormones — and in clinical trials demonstrated average weight loss of 15–21% of body weight when combined with lifestyle changes.
Chromium supplements are generally affordable and safe for most people, but their effect on weight loss is minimal compared to proven strategies. A calorie deficit of around 500 kcal per day typically results in sustainable loss of approximately 0.5 kg per week. Use our free BMI calculator above to check your current weight status, and our GLP-1 weight loss calculator to explore potential outcomes with evidence-based treatment options.
- 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 chromium safe to take?
Chromium is generally considered safe for most adults at standard supplement doses (typically 50–200 micrograms daily). However, very high doses may cause side effects like headaches or dizziness. Always consult your GP before starting any supplement, especially if you take diabetes medications or have kidney problems.
How much weight can chromium help you lose?
Evidence suggests chromium may support modest weight loss of 1–3 kg over several months in some people, but many individuals experience no significant change. These effects are much smaller than those seen with prescription weight loss medications or calorie restriction combined with exercise.
Is chromium better than diet and exercise for weight loss?
No. Diet and exercise remain the foundation of sustainable weight management. Even small amounts of physical activity and a modest calorie deficit produce more reliable weight loss than chromium supplements alone. For additional support, your GP can discuss NHS weight management services or prescription options.
Can I take chromium with prescription weight loss medication?
Chromium supplements are unlikely to interact with prescription weight loss injections like GLP-1 medications, but it's important to inform your prescriber of all supplements you take. They can assess whether chromium is appropriate alongside your prescribed treatment.
Where can I get chromium supplements in the UK?
Chromium supplements are available over-the-counter from supermarkets, health shops, and online retailers without prescription. Look for chromium picolinate (the most researched form) and follow package dosage instructions. The NHS does not routinely recommend chromium for weight loss.
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.