BMI and Weight Criteria: What the Guidelines Generally Say
Prescribing guidelines for tirzepatide (the active substance in Mounjaro) typically set out eligibility in terms of BMI rather than a specific body weight, because BMI accounts for height alongside weight. In many countries, the general thresholds referenced are:
- BMI of 30 kg/m² or above — often described as the standard eligibility threshold
- BMI of 27 kg/m² or above — may apply when a person also has at least one weight-related condition, such as type 2 diabetes, high blood pressure, or raised cholesterol
These figures are guidelines, not automatic entry points. A prescriber will also consider your overall medical history, any existing conditions, other medications you take, and factors that might make Mounjaro unsuitable for you. Suitability is always an individual clinical judgement.
It is also worth noting that eligibility criteria can differ depending on where you are in the world and how Mounjaro has been approved in your country. Your prescriber or doctor — and the patient information leaflet that came with your medicine — are the authoritative sources for the criteria that apply to you.
If you are curious about other eligibility factors, such as the age requirements for taking Mounjaro, those are also decided on a case-by-case basis by a prescriber. You may also find it helpful to read about how long people typically take Mounjaro, which is another common question once treatment begins. For a broader overview of the medicine, the Mounjaro information hub covers the key topics in one place.
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Tracking Your Journey Once You Are Prescribed
If you are already prescribed Mounjaro and working toward your goals, keeping a clear record of your progress can make a real difference to how informed and motivated you feel. GLP Trackr's weight and body tracking feature lets you log your weight regularly and see how it changes over time through charts and weekly summaries — so progress that feels invisible day to day becomes visible across weeks and months.
Alongside weight, the app's daily check-in captures mood, energy, sleep, and food noise in about 30 seconds each morning, giving you a fuller picture of how your body is responding rather than relying on the scale alone. And if you want to understand what is actually influencing your results, the insights and analytics tools surface patterns from your own data — useful context to bring to conversations with your prescriber.
For more detail on eligibility questions and what to expect from treatment, visit the weight requirements for Mounjaro page. Any questions about whether Mounjaro is right for you, or whether your current weight affects your treatment, should always be directed to your prescriber or doctor — they have access to your full history and can give you personalised guidance that general information cannot.
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Frequently asked questions.
Guidelines generally reference a BMI of 30 kg/m² or above, or 27 kg/m² or above if a weight-related condition such as type 2 diabetes is present. However, eligibility is always confirmed by a prescriber based on your individual circumstances.
Prescribing guidelines focus on BMI rather than a fixed body weight, since BMI factors in height. There is no single universal minimum weight figure — your prescriber assesses your full health profile to determine whether Mounjaro is appropriate for you.
In some guidelines, a BMI from 27 kg/m² may be considered if you have a qualifying weight-related health condition. Whether this applies to you depends on your individual medical history and your prescriber’s clinical judgement.
Ongoing treatment decisions, including whether to continue, adjust, or stop Mounjaro, are made by your prescriber. If your weight or health circumstances change, discuss this with your prescriber or doctor rather than making any changes yourself.
GLP Trackr lets you log your weight regularly, view progress charts, and capture daily check-ins covering mood, energy, and sleep. This gives you a complete picture of your journey to review and share with your prescriber.