Changes in life expectancy in Aotearoa New Zealand

Making Education Easy

Authors:

Ghafel M et al.

August 25, 2026

Summary:

Despite overall improvement in life expectancy in New Zealand, according to a cause-specific decomposition analysis conducted between 2001 2003 and 2020-2022, substantial inequities persist. The analysis used mortality data from the New Zealand Mortality Collection and population estimates from Statistics New Zealand. The largest absolute increases in life expectancy were observed among Māori. Reductions in cardiovascular disease and cancer mortality were responsible for more than half of the increased life expectancy across all ethnic and sex groups, while reductions in mortality from diabetes and smoking-related conditions also contributed to increased life expectancy among Māori and Pacific peoples. The study authors stated that further increases are likely to depend on strengthening primary prevention, improved participation in screening programmes, and equitable access to care.

Comment:

Great to see that life expectancy has slightly improved across all ethnic groups. Māori gains are largely driven by reduced cardiovascular disease and cancer mortality (due to focus and investment in prevention, treatment, primary and public health). However, substantial inequities remain, with Māori life expectancy still around 6.9 years lower for men and 6.3 years lower for women than non-Māori/non-Pacific populations. Continued monitoring is essential to ensure gains are sustained and any further improvements are shared equitably.

Reference: N Z Med J. 2026;139(1636):87-101.

Independent commentary by Dr. Matire Hardwood

Dr Matire Harwood (Ngapuhi) has worked in Hauora Māori, primary health and rehabilitation settings as clinician and researcher since graduating from Auckland Medical School in 1994. She also holds positions on a number of boards, committees and advisory groups including the Health Research Council. Matire lives in Auckland with her whānau including partner Haunui and two young children Te Rangiura and Waimarie.

Research Review publications are intended for New Zealand health professionals.

Disclaimer: This publication is not intended as a replacement for regular medical education but to assist in the process. The reviews are a summarised interpretation of the published study and reflect the opinion of the writer rather than those of the research group or scientific journal. It is suggested readers review the full trial data before forming a final conclusion on its merits.