Sometimes. Some insurers include height and weight on the medical questionnaire and may take BMI into account as one factor in the overall assessment — alongside conditions, medication and history. Practice varies between insurers and products: some ask, some don't, and the figure carries different weight in different underwriting approaches. The rules that apply everywhere on the questionnaire apply here: answer accurately, declare any related conditions where asked, and raise the concern at the quote stage so the application starts with the insurer best suited to it.
This question gets typed into search engines with more anxiety than almost any other on the medical side — usually late at night, by someone who has decided their BMI is the thing standing between them and Spain. Almost always, the reality is gentler than the fear. This page explains what insurers actually do with the figure, what the realistic outcomes are, and why honesty remains the winning move even here.
If this is your worry, put it in the message box when you request a quote — one sentence, and the routing is handled.
Do insurers actually ask? Some do, some don't
The first fact worth knowing: height and weight are not a universal questionnaire item. Some Spanish insurers include them as standard; others don't ask at all. Where the question appears, it's answered like any other declaration; where it doesn't, there is nothing to volunteer — the questionnaire's scope is set by the insurer, and you answer what's asked.
This variation is itself useful information. It means the market doesn't treat BMI with one mind, and it means the choice of insurer and product — the routing decision made at the quote stage — matters more for this concern than most. An applicant who picks a policy at random and meets an unfavourable question has had bad luck; one who raises the concern before applying has replaced luck with selection.
What insurers do with the figure
Where BMI enters the assessment, it enters as context, not as a verdict. Underwriting reads applications whole: age, declared conditions, medication, history — and, where asked, the height-weight figure alongside them. A number that might prompt a follow-up question in one profile passes without comment in another, because what the insurer is assessing is the overall picture of risk, not a single measurement against a cutoff.
It's also worth demystifying what "taken into account" means in practice. For most applicants, nothing visible happens at all — the figure goes in, the assessment proceeds, standard terms come back. The figure becomes active in the assessment mainly at the further ends of the range, or where it sits alongside related declared conditions. Applicants in the broad middle who have spent days dreading this question typically discover that underwriting spent no time on it whatsoever.
The realistic range of outcomes
Where the figure does draw attention, the outcomes are the same graduated set as every underwriting factor — and it helps to see them listed, because the imagination tends to skip straight to the worst one. Most commonly: acceptance on standard terms. Sometimes: follow-up questions, often about related health factors rather than the number itself. Sometimes: an offer with adjusted terms. And occasionally: no offer from that particular product — which, as everywhere in this cluster, is one door in a market of many, not the market's answer. Our guide to what happens if an application is declined covers that rarest branch in full.
One important separation: weight-related conditions — diabetes, blood pressure, joint problems, sleep apnoea and similar — are their own questionnaire items, declared and assessed as conditions in the usual way, whatever the height-weight question does or doesn't ask. The pre-existing conditions guide covers how that assessment works and why declared, managed conditions are familiar territory rather than alarm bells.
Why shading the number is the one real mistake
The temptation on this question is quieter than outright omission — just a little rounding, a figure from a lighter year, a guess that flatters. It's still the same error. The policy stands on your declarations, and a materially inaccurate figure is a non-disclosure risk like any other: it doesn't vanish into the file, it waits there, attached to a policy that your visa year depends on. And because underwriting reads the whole picture, the shaded number rarely even buys what it was supposed to — the related conditions, medication and history are on the form regardless.
So: weigh yourself, answer with the current figure, and let the assessment work with the truth. If the honest number leads to a follow-up question, that's the process functioning — and a follow-up question answered well is a far smaller cost than a claim examined against an inaccurate declaration. The full reasoning lives in the questionnaire guide; it applies to this question exactly as to every other.
The quote-stage move that changes everything
Because insurer practice varies on this question more than most, the single highest-value action for a concerned applicant happens before any questionnaire opens: say so at the quote stage. One sentence — "I'm concerned my BMI may be an issue" — lets the application be pointed at the insurer and product most likely to assess the whole profile well. That's the difference between meeting the market's range of approaches by lottery and meeting it by design.
This is the same playbook the whole medical cluster runs on: concerns raised early become routing decisions; concerns discovered mid-application become delays. It costs nothing, it's handled discreetly, and it's precisely what a specialist is for. Pair it with sensible timing — the when to buy guide's margins apply here too — and the question that kept you up at night becomes a line item that was handled in week one.
BMI & weight checklist
- Know that not every insurer asks — practice varies by insurer and product
- Where asked, weigh yourself and answer with the current figure — no flattering rounding
- Remember BMI is one factor in a whole-picture assessment, not a cutoff verdict
- Declare related conditions separately where the questionnaire asks — they are their own items
- Raise the concern at the quote stage so the right insurer is chosen first
- Remember that many applications proceed on standard terms, especially where there are no significant related conditions
- If one product declines, remember one door is not the market
- Build in timeline margin in case follow-up questions add days
Example scenarios
The midnight worrier
An applicant dreads the question for weeks, answers honestly, and watches underwriting pass over the figure without a single follow-up. The fear was the whole cost.
The quote-stage sentence
One line in the quote message — "BMI may be a concern" — and the application starts with the insurer whose approach fits. Routing, not luck.
The conditions kept separate
An applicant declares blood pressure medication as its own item and answers height and weight accurately. Each is assessed in its proper place; the whole clears with adjusted terms on one condition only.
The rounding avoided
Tempted to shave the figure, an applicant answers with the scale's number instead — and keeps a policy that stands on solid declarations for the whole visa year.
Worried about this question? One sentence to us and it's handled
Mention the concern when you request your quote and we'll route your application to the insurer and product most likely to assess it well — with the certificate and proof of payment prepared for your appointment. Discreet, early, and done properly. Final visa decisions rest with the Spanish authorities.
BMI & weight — FAQs
Can BMI or weight affect NLV health insurance?
Sometimes. Some insurers include height and weight on the medical questionnaire and may take BMI into account as one factor in the overall assessment, alongside conditions, medication and history. Practice varies between insurers and products — some ask, some do not, and how much weight the figure carries differs. It is one input among several, not a verdict on its own. See how underwriting works.
Do all insurers ask for height and weight?
No — practice varies. Some questionnaires include height and weight as standard, others do not ask at all. Where the question appears, answer it accurately like any other declaration. Where it does not, there is nothing to volunteer. This variation between insurers is one reason the choice of insurer and product matters for applicants concerned about the question.
What might happen if my BMI is high?
The same graduated outcomes as any underwriting factor: many applications proceed on standard terms; some insurers may ask follow-up questions, particularly about related health factors; some may offer adjusted terms; and occasionally a particular product may not make an offer. Different insurers weigh the figure differently, so one product's caution is not the whole market's answer.
Should I guess or round my weight on the questionnaire?
Answer as accurately as you reasonably can — weigh yourself rather than estimating from memory, and do not shade the figure to flatter the application. The policy stands on your declarations, and a materially inaccurate figure is a non-disclosure risk like any other. An honest, current figure is the answer that protects your cover.
Is BMI assessed on its own or with everything else?
With everything else. Underwriting reads the application as a whole: a BMI figure sits alongside age, conditions, medication and history, and context changes what it means. The figure in isolation decides less than applicants fear — which is also why lying about it to "fix" the application misunderstands how the assessment works.
Will weight-related conditions need declaring separately?
Yes — conditions are their own questions. Diabetes, blood pressure, joint problems, sleep apnoea and similar are declared as conditions where the questionnaire asks, regardless of any height and weight question. The insurer assesses the declared conditions and their management in the usual way, as covered in our pre-existing conditions guide.
Can I be declined just because of my weight?
It is uncommon for weight alone, in the absence of related conditions, to be the single deciding factor — but underwriting decisions rest with each insurer, and practice varies. If one product declines, others may assess the same profile differently. Raising the concern at the quote stage lets the application start with an insurer whose approach fits your situation. See if you're declined.
Should I mention weight concerns when requesting a quote?
If it is on your mind, yes — a sentence at the quote stage lets us choose the insurer and product most likely to assess your application well, before the questionnaire goes in. That is the same playbook as every medical concern on this site: raised early, most concerns become routing decisions rather than problems. Request a quote.
More questions? See the full FAQ hub.