Doctors at MD Anderson Cancer Center in Texas looked at women who developed breast cancer linked to the genetic mutation BRCA. They found if a woman develops breast cancer, her daughters and nieces may get the disease six to eight years earlier than she did.
Scientists note their a number of other factors, including better screening could be at play.
However, they also note it's important to screen for breast cancer at a younger age, if you have an older relative who developed the illness.
