Twenty years on, the Australian Longitudinal Study on Women’s Health (better known as Women’s Health Australia) is the largest, longest running study on women’s health in the country. Since the study commenced in 1996, a joint team from The University of Queensland and the University of Newcastle has kept track of some 58,000 women, processed 250,000 surveys, sent 2.5 million emails and analysed 114 million responses to questions. The result is a national research resource like no other.