30 Years of Women's Health Data: What the ALSWH Taught Us and How Ovum Is Listening

Last month, Australia's longest-running women's health study turned 30. It's a milestone worth pausing on, not just because of how far we've come, but because of how much further we still need to go.

The Australian Longitudinal Study on Women's Health (ALSWH) was founded on 22 April 1996, at a time when reliable data on women's health was scarce and conditions like endometriosis were barely on the medical radar. Three decades later, it tracks more than 57,000 women across regional, remote and metropolitan Australia — making it the largest study of its kind in the country. It spans four generations of women, has informed over 1,200 scientific publications, and has directly shaped national health policy.

That is an extraordinary achievement. And it represents exactly the kind of long-term, systemic investment in women's health that has been sorely missing for far too long.

What the ALSWH Has Revealed

The impact of the ALSWH is hard to overstate. Before this study, endometriosis was under-recognised and under-researched. The ALSWH was asking participants about the condition as early as 2000, years before it became the mainstream conversation it is today. In 2023, data from the study revealed that one in seven Australian women aged 40–44 had been diagnosed with endometriosis, a prevalence rate higher than previously reported. That finding changed the national conversation, and earlier this year, researchers used ALSWH data to develop a five-minute diagnostic questionnaire that could significantly reduce the average six-to-eight-year wait for a diagnosis.

The study has also been instrumental in understanding the long-term health consequences of domestic violence — research that informed the National Plan to End Violence Against Women and Children 2022–2032. It has shed light on weight management, chronic disease, mental health, and how early reproductive events ripple through a woman's health across her entire lifetime.

This is what happens when you commit to following women's health across decades. Patterns emerge. Connections are made. Science catches up with what women have known about their own bodies all along.

The Gap That Still Exists

For all its achievements, the ALSWH is also a reminder of how much was never studied. The fact that this study was groundbreaking in 1996 — simply for taking women's health seriously as a field worthy of rigorous, long-term scientific enquiry — tells you everything about the state of medical research before it existed.

Women's health has historically been under-researched, underfunded, and misunderstood. Symptoms dismissed. Diagnoses delayed. Conditions conflated or overlooked. The ALSWH was a corrective — and a necessary one. But 57,000 participants over 30 years, as significant as that is, represents a fraction of the data needed to fully understand the complexity and diversity of women's health experiences.

Now, the study is expanding to better represent Australia's culturally diverse communities, recognising that health outcomes, access, and lived experience vary enormously across different backgrounds. It's a step in the right direction. But the work isn't finished.

Why This Resonates With Us at Ovum

At Ovum, reading about the ALSWH's 30th anniversary felt like reading a statement of shared values.

The entire premise of the ALSWH — that women's health deserves sustained, serious, longitudinal attention — is exactly what drives what we're building. The researchers who founded this study in 1996 believed that following women's health across time would reveal things that snapshot studies never could. They were right. And that same conviction is at the heart of Ovum.

Every symptom logged in Ovum, every pattern tracked, every piece of data shared is part of something we deeply believe in: that the more we understand about women's health across time and across diverse experiences, the better healthcare becomes for everyone. We're working to build the world's first longitudinal AI women's health dataset — not to replace the kind of rigorous clinical research the ALSWH represents, but because we believe technology can help extend that spirit of inquiry into everyday life.

Our AI learns across the collective experience of every woman using the platform — identifying patterns, surfacing insights, and feeding knowledge back into the broader healthcare conversation. The more women who use it, the richer that picture becomes. It's a different kind of data collection to a longitudinal survey study, but it's driven by the same fundamental belief: that women's health experiences are worth documenting, analysing, and acting on.

Studies like the ALSWH paved the way for that belief to even be possible. They made the case — with 30 years of evidence — that investing in understanding women's health yields results that matter. We're building in the spirit of that legacy.

This Is What Progress Looks Like

The 30th anniversary of the ALSWH is worth celebrating loudly and without reservation. It's proof that when we commit to understanding women's health — really commit, with funding, time, and scientific rigour — the knowledge we generate changes lives. It changes policy. It changes diagnoses. It changes outcomes.

Thirty years. 57,000 women. More than 1,200 scientific publications. And still going — still expanding, still asking new questions, still finding new answers.

That's what it looks like to take women's health seriously. And it's the standard we hold ourselves to.

Sources: University of Queensland | University of Newcastle | ALSWH | Femtech Insider