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Health and underwriting

Family history of heart disease and insurance underwriting

A parent or sibling with heart disease at a young age is a recognised rating factor. On its own it is usually mild. Combined with your own blood pressure, cholesterol, build or smoking status, it does considerably more work.

Last reviewed 4 September 2026 · Written and checked by the Best Life Insurance editorial team · How we get paid

In short

  • The question covers parents and siblings, and diagnoses or deaths below a stated age.
  • Age at the relative’s diagnosis matters more than the diagnosis itself.
  • It is assessed together with your own cardiovascular risk factors, not in isolation.
  • Life and trauma cover are the products most likely to be affected.
  • Insurers may ask whether you have had any cardiac investigation yourself, and what it showed.
  • A normal recent cardiac investigation in your own file can offset a family pattern.

What this is, plainly

Cardiovascular family history is one of the oldest rating factors in life underwriting, and it is applied narrowly. The question is about parents and siblings, and about events below a threshold age that varies by insurer. A father who had a heart attack at 48 is squarely within it. A grandfather who died at 84 is not.

The important nuance is that this factor rarely acts alone. Underwriters combine it with your own numbers — blood pressure, cholesterol, build, smoking status — and rate the picture. A strong family history in an otherwise clean file is often a modest loading or nothing at all. The same family history alongside three of your own risk factors is what produces a material rating.

How it is asked and how it is weighted

The questions are short. What you can bring to them is your own evidence.

  • Which relatives were affected, and with what.
  • Their age at diagnosis or at death.
  • Whether more than one first-degree relative is affected.
  • Whether you have had any cardiac investigation yourself, and what it showed.
  • Your own blood pressure, cholesterol, build and smoking status.

Evidence commonly requested

  • Your own recent results, through a GP report or the insurer’s blood panel.
  • Any cardiac investigation report you already have.
A family history of heart disease across the four products
Cover typeHow this history usually lands
Life coverFrequently standard alone; rated where your own risk factors sit alongside it.
Trauma coverOften the most affected, since heart attack is a core listed trauma condition.
TPDUsually standard.
Income protectionUsually standard to lightly rated.

General market practice, not a rule. Appetite differs by insurer and changes over time.

This factor does not change with time, but the file around it does. Underwriters read your own recorded numbers alongside the family pattern, so a documented improvement in blood pressure, cholesterol, build or smoking status changes the combined assessment even though the family history stays the same. Where you have already had a cardiac investigation with a normal result recorded, that is worth presenting.

Not sure what cover you actually need?

That is the question an adviser is there to answer. Tell us your situation and a licensed New Zealand adviser will compare the market and come back with a written recommendation — including where you can cut cover you do not need.

No cost to you and no obligation. General information only — not personalised financial advice.

What to watch for

These are the details that decide whether the cover does what you expected. Read them before you compare on price.

  • That the threshold age differs between insurers, so the same family history is not weighted identically.
  • That your own risk factors are what turn a mild factor into a material one.
  • That trauma cover is usually the product where this shows up most.
  • That a normal cardiac investigation in your own record is useful evidence and should be presented.
  • That the loading itself is rarely reviewable, though the surrounding factors are.

Where an adviser makes a difference

Every New Zealand insurer writes applications with a cardiovascular family history to its own wording, and the words are where the money is. Two policies that look identical on price can pay very differently when it matters. Closing that gap is the entire job of an adviser.

  • Age thresholds and weightings differ, and an adviser knows which insurers treat this history most kindly.
  • Where several mild factors combine, insurer choice can be worth more than anything else you do.
  • An adviser can present your own investigation results alongside the family history rather than after it.
  • If your own numbers improve, an adviser can request a review of the combined rating.

There are three ways to buy life cover in New Zealand, and they are not equivalent. You can buy direct from one insurer, which means you see one product range and one underwriting appetite. You can buy through your bank, which usually means a single insurer’s product sold under the bank’s brand, often with narrower definitions. Or you can go through an adviser, who quotes several insurers at once and is required to put your interests first.

The premium you pay is the same either way. Insurers build adviser commission into their pricing whether or not an adviser is involved, so going direct does not get you a discount — it just removes the person whose job is to argue your corner at application and at claim time.

  • An adviser can see which insurer is currently taking your health history on standard terms, and which one will load or exclude it.
  • An adviser can structure cover across two insurers if that produces a better outcome than putting everything with one.
  • An adviser handles the underwriting back-and-forth, and is the person who chases the claim when a family is least able to.
  • An adviser has to document why the recommendation suits you, which is a written record you can hold them to.

What happens if you get in touch

We are a referral service, not an insurer. We do not quote premiums and we do not sell policies. What we do is put you in front of one licensed New Zealand adviser who can compare the market properly.

  1. 1

    You tell us what you are looking at

    The form takes about a minute. Nobody asks for your medical history on a web form — that conversation happens with the adviser, properly, and only once you have decided to proceed.

  2. 2

    An adviser calls you

    A licensed New Zealand adviser talks through your situation: who depends on you, what you owe, what you already have in place, and what you are actually worried about.

  3. 3

    They compare the market

    The adviser quotes across the major insurers, checks which of them will take your health history on the best terms, and puts the options side by side in writing.

  4. 4

    You decide, in your own time

    There is no obligation and no cost to you. If the answer is that you already have enough cover, a good adviser will tell you that.

Frequently asked questions

Does a parent’s heart attack affect my life insurance application?

It can, if it happened below the insurer’s threshold age — which is usually somewhere in the fifties or sixties. On its own, in an otherwise clean file, it is frequently a mild factor or none at all. It matters most when combined with your own cardiovascular risk factors.

How far back does family history go on an insurance form?

Usually only to parents and siblings. Grandparents and wider family are generally outside the question. Read the wording rather than assuming, because a small number of applications ask more broadly.

Can a normal heart scan offset a family history of heart disease?

It can help. Underwriters read your own recorded evidence alongside the family pattern, and a normal cardiac investigation in your file gives them something concrete about you rather than about your relatives. Present it with the application rather than waiting to be asked.

Why does family history of heart disease affect trauma cover more than life cover?

Because heart attack is a core listed condition that a trauma policy pays a lump sum on. Anything that raises the likelihood of that diagnosis is directly relevant to the trauma price in a way it is not to life cover.

Does my family history rating change if I improve my own health?

The family history itself does not change, but the combined assessment can. Where a loading was applied to the cluster of family history plus your own numbers, documented improvement in those numbers is a legitimate basis for asking your insurer to review the rating.

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