Welcome to Growing Up in New Zealand

Growing Up in New Zealand is New Zealand's contemporary longitudinal study tracking the development of approximately 7,000 New Zealand children from before birth until they are young adults. The study is designed to provide unique information about what shapes children’s early development and how interventions might be targeted at the earliest opportunity to give every New Zealand child the best start in life.

  • Michelle Duff: When breastfeeding sucks
    20 February 2016
    The Growing Up in New Zealand study, the country's largest study of a group of children, found more than 90 per cent of mothers had stopped exclusive breastfeeding by six months, and most had stopped by four.
  • Target dads, says jab study
    11 February 2016
    New Zealand fathers-to-be are nearly twice as likely as their pregnant partners to be undecided about immunisation before their child is born. This matters, say researchers who now want an immunisation campaign designed specifically to target men.


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Keep up-to-date with our latest research, and news on data access and upcoming projects.

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Access to GUiNZ data

Antenatal and nine-month data from Growing Up in New Zealand is available for use by researchers outside the Growing Up team.

Find more information on how to apply for access to our external data sets

Key findings

All year round, the Growing Up in New Zealand team publishes scientific and working papers, and releases major reports and topical policy briefs.

Find out more

Meet our families

Meet Sophie (5) from Auckland and Kaea (4) from Hamilton, two of the 7,000 children whose lives the Growing Up in New Zealand study follows. Their stories offer vivid pictures of how children grow up in New Zealand today.

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