How BMI Fits Into Mounjaro Prescribing Criteria
BMI — body mass index — is a widely used screening measure calculated from height and weight. It gives a rough indication of whether someone is within a healthy weight range, and it forms one part of how prescribers assess suitability for weight-management medicines like Mounjaro.
Typical BMI thresholds
In many countries, clinical guidelines for medicines like Mounjaro reference two broad BMI thresholds:
- BMI of 30 or above — often described as obesity, and a common starting point for eligibility in weight-management treatment pathways.
- BMI of 27 or above with at least one weight-related health condition — such as high blood pressure, type 2 diabetes, or raised cholesterol. In these cases, a lower BMI threshold may apply because the health risk is already elevated.
These figures reflect general patterns in prescribing guidance, but they are not universal rules. Programmes, clinical services, and individual prescribers may apply different criteria. Your prescriber or doctor is the only person who can confirm whether you meet the threshold relevant to your situation.
BMI is not the whole picture
BMI has well-known limitations — it does not account for muscle mass, bone density, fat distribution, or ethnicity-related differences in metabolic risk. Prescribers assess your full health profile, not just a number. For a deeper look at how BMI criteria relate to Mounjaro specifically, see how BMI relates to Mounjaro eligibility and what BMI you need for Mounjaro in more detail.
You can also explore the BMI needed for Mounjaro for further context on how these thresholds are applied in practice.
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Once you are prescribed Mounjaro, keeping a clear, consistent record of your weight over time is one of the most useful things you can do — both for your own motivation and to support informed conversations with your prescriber.
GLP Trackr's weight and body tracking feature lets you log your weight as often as you like, with charts that show your trend over days, weeks, and months rather than fixating on daily fluctuations. Seeing progress as a clear visual trend is far more meaningful than a single reading, and it gives you something concrete to bring to your next prescriber appointment.
The daily check-in takes about 30 seconds — log your weight, energy, mood, and how your appetite feels that day. Over time, the app's insights surface patterns you might not notice yourself, such as how sleep or food choices appear to correlate with your results.
For context on how your weight interacts with your calorie and nutrition goals on a GLP-1 journey, the GLP-1 calorie calculator hub is a useful companion.
GLP Trackr is available free on the App Store and Google Play, with a 7-day free trial — so you can start logging your progress from your very first dose.
GLP Trackr is a tracking and journaling app. It does not provide medical advice, assess eligibility for any medication, or replace the judgement of your prescriber or doctor. If you have questions about whether Mounjaro is suitable for you, always raise them with a qualified healthcare professional.
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Frequently asked questions.
Prescribers generally consider Mounjaro for people with a BMI of 30 or above, or 27 and above if a weight-related health condition such as type 2 diabetes or high blood pressure is present. Exact criteria vary by country and clinical service, so your prescriber or doctor is the right person to confirm your eligibility.
No. BMI is one part of a broader clinical assessment. Prescribers also consider your overall health, any existing conditions, current medications, and your individual circumstances. A BMI number alone does not determine eligibility.
You can calculate your BMI using your height and weight, but this gives you a rough figure only. Whether you meet the full prescribing criteria is a clinical decision that belongs with your prescriber or doctor, who will consider your complete health picture.
Yes. GLP Trackr lets you log your weight regularly and view your progress as a trend chart over time. This makes it easier to see how your journey is going and to share a clear summary with your prescriber at appointments.