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The rising rate of type 2 diabetes in young New Zealanders is becoming a health crisis

New Zealand's health system is nowhere near ready for the surge in type 2 diabetes among young people, warns Dr Lynne Chepulis, Associate Professor in the School of Health Equity and Innovation.

01 Jul 2025

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No longer just a condition of middle age, type 2 diabetes is increasingly affecting children, teenagers and young adults in New Zealand. And our health system is nowhere near ready to manage this surge.

Type 2 diabetes is a condition where the body stops properly using insulin, the hormone that helps control blood glucose. Glucose then builds up in the blood. Over time, that can damage the heart, kidneys, eyes, nerves and more.

This condition is more aggressive in young people. It progresses faster, causes complications earlier, and is harder to manage, often due to the accumulation of damage across their lifetime. People with young-onset type 2 diabetes than those diagnosed later in life.

Our looks at who has been diagnosed with type 2 diabetes across the Waikato and Auckland regions of New Zealand. From a dataset of more than 65,000 people with type 2 diabetes, 1,198 were aged under 25 years.

More than a quarter of people (28.0%) with diabetes under the age of 25 had type 2 diabetes (the rest mostly have type 1 diabetes an unrelated autoimmune condition), up from less than 5% of this age group 20 years ago.

Further, only one in four young people with type 2 diabetes meet their blood glucose (HbA1c) targets, meaning a higher need for more doctor visits, more medication, and more chance of serious problems later on.

This rise in under 25s with type 2 diabetes has been , but our research gives a clear picture of just how worrying the trend is.

Even though all young people with diabetes have access to specialist care, healthcare access remains challenging for many, particularly Mori and Pacific communities which are .

And the pressure isnt just on patients its on the entire health system.

Young people with type 2 diabetes may need care, medication and effective treatment plans for the rest of their lives. That means higher costs for general practice, increased demand on diabetes clinics, and a growing strain on hospitals and emergency services.

There are also rising wellbeing costs associated with young-onset type 2 diabetes. These young people often miss school or work. They struggle with the emotional toll of living with a chronic illness. Some lose trust in a health system that doesnt always meet their needs, and for some it feels like the start of a .

Addressing the deeper causes

Theres no one cause for young-onset type 2 diabetes. Obesity is a huge factor. Nearly 90% of young people in our research were overweight or obese, and childhood obesity has been rising in New Zealand for years.

, too. Its harder for families with less money to buy healthy food or get access to regular healthcare.

Health inequality in New Zealand also matters. Type 2 diabetes can be inter-generational and children born to mothers with diabetes are at a .

Opportunities to turn this rising tide exist, but it needs a multi-pronged approach. That starts with addressing child poverty, making healthy food affordable and accessible, and making sure families have the support they need.

Patients need to be well-supported .

This means culturally respectful care, better access to medications and tech and making sure no one is left behind just because of their postcode or their background.

Managing type 2 diabetes in young people is also . Clinicians need appropriate support to provide integrated care, including resources and programmes that are age appropriate.

Ideally, we also need to early on.

Young-onset type 2 diabetes screening programmes have been but are not yet widespread in New Zealand.

Timely screening of at-risk asymptomatic young people could catch type 2 diabetes early, delaying or even preventing serious complications. Yet right now, many young people are being diagnosed late.

The increase in type 2 diabetes in young people demands serious investment, coordinated effort and long-term commitment. With better detection, smarter treatment plans, and a stronger, more connected health system, the problem can be addressed.The Conversation

, Associate Professor, Health Sciences,

This article is republished from under a Creative Commons license. Read the .

The Conversation

This article originally appeared in The Conversation. .

The Conversation

This article originally appeared in The Conversation. .

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