A/Prof John Eden is a certificated reproductive endocrinologist and gynaecologist; he was amongst the first group of specialists to be accredited as a reproductive endocrinologist. He is a Director of the Women’s Health and Research Institute of Australia, the Sydney Menopause Centre and the Barbara Gross Research Unit. His research and clinical interests include managing menopause after breast cancer, infertility, early menopause, polycystic ovary syndrome (PCOS), amenorrhoea, and hormone replacement therapy.