How BMI Thresholds Typically Work in Mounjaro Prescribing
BMI — body mass index — is a numerical value calculated from height and weight. It is one of several factors a prescriber considers when deciding whether a medicine like Mounjaro is appropriate for weight management.
Commonly referenced BMI thresholds
Based on clinical guidance and prescribing information, Mounjaro for weight management is generally considered where:
- BMI is 30 or above (classified as obesity), or
- BMI is 27 or above when accompanied by at least one weight-related health condition, such as type 2 diabetes, high blood pressure, or raised cholesterol
These figures reflect the criteria referenced in the medicine's approved product information, but how they are applied varies by healthcare system, prescriber, and individual circumstances. You can find detailed prescribing criteria in the electronic Medicines Compendium (eMC), where the Mounjaro Summary of Product Characteristics is published.
BMI is not the only factor
A prescriber will also weigh up your overall health, any existing conditions, other medicines you take, and contraindications before making a decision. BMI is a useful screening tool, but it has well-known limitations — it does not account for muscle mass, ethnicity-related risk differences, or where body fat is distributed.
If you are unsure whether your BMI meets the threshold for your prescription, the right person to ask is your own prescriber or doctor. For more on the specific BMI criteria discussed around Mounjaro eligibility, see our related pages on understanding your BMI requirements for Mounjaro and what BMI you need to be prescribed Mounjaro.
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Tracking Your BMI and Progress with GLP Trackr
Once you are prescribed Mounjaro, your BMI becomes just one data point in a much larger picture. GLP Trackr's weight and body tracking feature lets you log your weight regularly and watch how it changes over time — turning a single number into a visible trend.
Beyond the scale, the daily check-in captures mood, energy, sleep, and how your appetite is responding, giving you a richer view of your journey than BMI alone ever could. And when it comes to talking with your prescriber at a follow-up appointment, the app's built-in doctor report lets you bring a clear, organised summary of your progress — rather than trying to recall weeks of data from memory.
For help understanding the calorie and nutrition side of your journey alongside your weight tracking, visit our GLP-1 calorie calculator hub. You can also explore the BMI criteria for Mounjaro prescribing in more detail.
GLP Trackr is free to try for 7 days — available on the App Store and Google Play. Start logging your weight today and see your progress take shape week by week.
Always follow the guidance of your prescriber or doctor — they know your full medical history and are best placed to confirm whether Mounjaro is right for you. If you have any concerns about your suitability or progress, discuss them with your healthcare professional.
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Frequently asked questions.
Mounjaro for weight management is commonly prescribed to people with a BMI of 30 or above, or 27 or above if a weight-related health condition such as type 2 diabetes is also present. Your prescriber or doctor makes the final decision based on your individual health.
In some cases, a BMI of 27 or above may meet prescribing criteria if you also have a qualifying weight-related condition. Whether you are eligible is a decision for your prescriber, who will consider your full medical history alongside your BMI.
No. BMI is one factor, but prescribers also consider existing health conditions, other medicines, contraindications, and your overall health. BMI alone does not guarantee eligibility — only your prescriber can confirm whether Mounjaro is appropriate for you.
GLP Trackr lets you log your weight regularly and view trends over time. As your weight changes, you can see your progress charted week by week. The app does not calculate medical eligibility — it helps you track your journey once you are already prescribed.
The Summary of Product Characteristics (SmPC) on the electronic Medicines Compendium (eMC) sets out the approved prescribing criteria. Your prescriber or doctor is the right person to interpret these criteria in relation to your individual situation.