2026-08-26 · 5 min
BMI and clinical indication: the doctor does not prescribe just because you want to lose weight
What the doctor assesses beyond BMI, why wanting to lose weight is not enough, and when pharmacological treatment may not be the right next step.
BMI is a starting figure, not a prescription. Two adults with the same BMI can have entirely different metabolic risk, medication and contraindications. The clinical decision is not reduced to one number.
In the assessment the doctor crosses BMI with metabolic risk (diabetes, prediabetes, hypertension, dyslipidaemia, apnoea), past attempts, active disease, pregnancy or planning a pregnancy, and current medication. There are situations where pharmacological treatment for weight loss is not indicated, even if the weight bothers you.
Sometimes the first step is not medication: investigating a secondary cause (for example thyroid), reviewing a drug that promotes weight gain, or requesting blood tests before any prescription. Delaying medication can be the correct course.
If the doctor does not prescribe, that does not mean “there is no treatment”. It means that, at that moment, the safe plan is another: habits, tests, follow-up, or review later. No consultation can guarantee a weight result.
For this decision, the right act is the first weight-management consultation. Renewing a long-term prescription does not replace this assessment when the aim is to start or change a weight-loss plan.
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Frequently asked questions
What is the minimum BMI for medical weight treatment?
There is no single number that, on its own, opens or closes a prescription. The doctor assesses BMI together with comorbidities, contraindications and the rest of the clinical picture.
If BMI is only slightly raised, is the consultation still useful?
Yes, if there is associated disease or clinical doubt. The consultation can also conclude that medication is not indicated and set the next step.
Can I insist on a specific medicine?
You can describe what you have already tried. The choice of treatment, if indicated, is clinical, not a catalogue to order from.