Weight
- A calculator result does not choose a treatment for you.
- Bring context and questions, not just a number.
- Discuss the least burdensome appropriate option, without ruling medication in or out in advance.
1. What does BMI actually tell you?
The WHO describes BMI as weight divided by height squared: a proxy for fatness. For example, a fictional adult weighing 80 kg at 1.70 m has a BMI of about 27.7 kg/m². That calculation is reproducible; a treatment decision is not an arithmetic exercise.
If a result makes you anxious, pause before searching for a medicine or a target weight. A useful first question is: what does this number help us understand, and what does it leave unanswered?
2. Put the number in context
In England, NICE recommends using waist-to-height ratio alongside BMI in adults whose BMI is below 35. That is an assessment recommendation, not a medication rule for every country.
Ask your clinician which additional information would change the next step. Bring your weight history, current concerns and any results you already have. You do not need to arrive with every possible measurement or order tests from an online checklist.
3. A treatment conversation is broader than a threshold
US NIDDK guidance includes health history, other medicines, benefits, side effects and cost in medication decisions. Ask which local rules apply to the specific treatment being discussed.
Try asking: what options are reasonable for me, what would each involve, and when would we review the decision? Wanting less intervention is a preference to discuss, not a conclusion that a medicine is unnecessary. Being open to medication does not commit you to it.
4. Use the tools to prepare, not to self-prescribe
Start with Weight and BMI in context, linked below the cover, if you want to check the calculation. Then use Treatment options to organise your priorities for a conversation. Neither tool can confirm a diagnosis, select a medicine or establish access to treatment.
Before your appointment, write one sentence about what you want help with, one about what you have already tried, and one question you most want answered. A short, honest summary is more useful than trying to produce a perfect score.
5. Leave with a next step you understand
Ask who will review any missing information and when you should follow up. If you already take medication, use this article to prepare questions for your prescriber, not to change or stop treatment.
This article is for adults and was prepared with AI assistance. It has not had independent clinical review. WHO provides global context; the NICE and NIDDK sources relate to England and the United States respectively. Their guidance is not a personal prescription or a promise of eligibility elsewhere.
Sources & further reading
- WHO — Obesity and overweight ↗Global public-health reference; not a national prescribing or reimbursement rule.
- NICE NG246 — Identifying and assessing overweight, obesity and central adiposity ↗England; adult assessment recommendations 1.9.7–1.9.8. Other countries may use different pathways.
- NIDDK — Prescription Medications to Treat Overweight & Obesity ↗United States; discussion factors, not confirmation of individual eligibility or coverage.
Sources checked: 2026-09-29. AI-assisted editorial content. Not independently clinically reviewed.
Educational support for adults, not medical care. Do not start, stop or change treatment based on this website. For urgent or severe symptoms, seek medical care now.
