​More than 2.3 million cases of breast cancer are reported every year, a report released by the World Health Organisation (WHO) says. This makes it one of the most common forms of cancer in adults. A study by the International Agency for Research on Cancer found that in 2020, of the 4.4 million women who died due to cancer in 2020, 25% of the deaths happened due to breast cancer. Female gender and older age are the most common factors for breast cancer.​