Snip Happens: A Retrospective Study of Vasectomy and Birth rates in Australia
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Background
Fertility rates in Australia have been declining over recent decades, reaching a record low total fertility rate of 1.48 births per woman in 2024. Concurrently, vasectomy remains widely accessible and increasingly normalised as a permanent contraceptive option. Despite extensive commentary on falling birth rates, no contemporary Australian study has examined vasectomy rates relative to birth rates over time. We aimed to compare population level vasectomy and birth rates across Australian jurisdictions and age groups.
Study design
Nationwide retrospective time-series study. Retrospective population-based study using Medicare Benefits Schedule item 37623 to identify vasectomy procedures performed between July 2015 and December 2024. Rates were calculated per 100,000 male population using quarterly Australian Bureau of Statistics (ABS) population estimates and summarised as rolling 12-month averages. Birth rates were derived using matched ABS data for women across equivalent age strata (18–24, 25–34, 35–44 years).
Results
Vasectomy rates increased nationally from 32 per 100,000 in 2016 to 55 per 100,000 in 2023 before declining modestly in 2024. Birth rates declined from 5,200 to 3,800 per 100,000 over the same period. Trends were consistent across states and age groups, with the greatest vasectomy uptake in men aged 35–44 years.
Conclusion
Australia is undergoing a demographic shift characterised by rising vasectomy uptake and declining fertility. We have observed changing secular trends in two related but distinct demographic indicators of reproductive intention. Ongoing monitoring of permanent and long-acting contraception is essential to understand evolving population dynamics and inform reproductive health policy.
Short summary for non-experts
This nationwide study demonstrates that rising vasectomy uptake in Australia coincides with declining birth rates, particularly among men aged 35–44 years. Monitoring permanent contraceptive use alongside fertility trends may help clinicians and policymakers better understand changing reproductive intentions and inform future reproductive health planning.
Short summary for non-experts
Australia’s birth rate has fallen to record lows, raising growing concerns about how changing reproductive choices may shape future society and healthcare needs. In this study, we found that vasectomy rates increased steadily across Australia between 2016 and 2024 while birth rates declined, particularly among adults aged 35-44 years. These findings suggest Australian men are increasingly choosing permanent contraception and highlight the need for ongoing monitoring of reproductive health trends to inform future policy and service planning.
