What BMI Qualifies for Wegovy — and What Else the Criteria Require

The myth: you need a BMI of 35 to qualify for Wegovy

This comes up constantly, and it's understandable, the NICE technology appraisal for semaglutide on the NHS does set a threshold of 35 or above, plus at least one weight-related comorbidity, for NHS-funded access through specialist services. So if you've been told you don't qualify, that may well be accurate for NHS treatment. The private licensed eligibility is lower.

Under the medicine's UK marketing authorisation, Wegovy is licensed for adults with a BMI at or above 30, or from 27 upwards when a weight-related health condition is present. That is what the prescribing criteria reflect at a private clinic. If you're unsure where you sit, reading about the qualifying BMI for Wegovy sets out exactly how those thresholds are applied in practice. The NICE threshold and the licence threshold are two different things, and conflating them is the source of most of the confusion on this topic.

You can check your own BMI in under a minute using the NHS BMI calculator, it's free, takes a height and weight, and tells you exactly where you stand. Worth doing before your consultation if you haven't already.

Which health conditions bring the threshold down to BMI 27

If your BMI sits between 27 and 29.9, you are not automatically outside the licensed criteria. What matters is whether you have at least one weight-related condition. The kind of conditions that count include type 2 diabetes, prediabetes, high blood pressure, raised cholesterol or triglycerides, obstructive sleep apnoea, and cardiovascular disease. Osteoarthritis and certain other conditions may also be relevant depending on clinical context.

The logic behind the lower threshold is straightforward: carrying excess weight is more likely to be actively harming your health if one of these conditions is already present, so the risk-benefit calculation shifts even at a lower BMI. A prescriber reviews the full picture, not just the number, which is why the consultation process matters and why understanding which conditions qualify alongside a lower BMI is worth reading if this applies to you.

It is also worth knowing that BMI thresholds are applied 2.5 kg/m² lower for people of South Asian, Chinese, Middle Eastern, Black African or African-Caribbean backgrounds, in line with UK clinical guidance that recognises cardiometabolic risk at lower body-mass indices in those populations. So a BMI of 27.5 may satisfy the licensed criterion for a 30 threshold in certain cases. A helpful way to work through your own situation is to look at what BMI you need to qualify for Wegovy, which covers these adjustments in more detail.

What the NHS route to Wegovy actually requires

The NHS pathway to Wegovy is distinct from private access, and stricter. NICE's guidance (TA875) recommends semaglutide only within a specialist weight management service, with multidisciplinary support, for a maximum of two years, and for adults with a BMI of 35 or above alongside at least one weight-related comorbidity, or BMI 30 to 34.9 where specialist referral criteria are met. NHS England applies ethnic-background adjustments here too, typically 32.5 in place of 35 and 27.5–32.4 in place of 30–34.9 for relevant backgrounds.

Waiting lists for specialist weight management services are commonly long. That gap between licensed eligibility and NHS access is why many people explore regulated private services. Wegovy on the Wegovy overview page covers both routes in more detail if you want to compare them before deciding how to proceed. The NICE appraisal of semaglutide (TA875) sets out the NHS criteria in full for anyone who wants to read the primary source.

Other factors a prescriber considers beyond BMI

Clearing the BMI hurdle opens the door to a consultation; it doesn't guarantee a prescription. Wegovy is not suitable for everyone who meets the BMI criterion. A prescriber will consider personal and family medical history (including a history of pancreatitis, certain thyroid conditions, or specific gastrointestinal disorders) as well as other medicines you are taking and whether you are pregnant, trying to conceive, or breastfeeding. Wegovy is not recommended in any of those situations, and it is not licensed for people under 18.

At nume, every consultation is read and decided by a GPhC-registered Independent Prescriber. Our clinical team page gives you a sense of who that is. If you have questions about your specific situation before starting, finding out whether you qualify for Wegovy is a good place to begin, and our FAQs cover the most common questions too. You can always reach us through the contact page. The broader weight loss treatment overview is a good starting point if you're still deciding which treatment to explore. For the full cost picture, the Wegovy pricing page sets out what's included without hidden fees. When you're ready, checking your eligibility through a free consultation is the natural next step.