Objective: This study aimed to explore Australian women's current knowledge, perspectives and attitudes about breast density (BD); and information needs to inform effective evidence-based communication strategies. Methods: Fourteen online focus group sessions with a total of 78 women in New South Wales and Queensland, Australia aged 40–74 years without a personal diagnosis of breast cancer were conducted. Audio-recorded data was transcribed and analysed thematically. Results: Women had a very limited knowledge of BD. Overall, women expressed a preference for more frequent mammograms and...