Breast cancer is among the most commonly diagnosed cancers in Australia, and the second most common in women. Around 1 in 8 women will be diagnosed with breast cancer by the time they are 85, most often in women older than 40.
Although 99% of breast cancer diagnoses are in women, breast cancer also affects many men, with 1 in 667 men likely to be diagnosed by the age of 85. Gender diverse people taking female hormones are also at an increased risk of breast cancer.