Breast cancer is the most common invasive cancer in females worldwide. This type of cancer starts when cells in the breast begin to divide and grow in an abnormal way. It’s caused by a combination of lots of different factors, many of which are beyond our control.

Breast cancer is not one single disease – there are several types of breast cancer. It can be diagnosed at different stages and can grow at different rates. This means that people can have different treatments, depending on what will work best for them.