GENETICS
Family history: Having a family history of breast cancer, particularly women with a mother, sister or daughter who has or
had breast cancer, may double the risk.
Inherited factors: Some inherited genetic mutations may increase your breast cancer risks. Mutations in the BRCA1 and
BRCA2 genes are the most common inherited causes. Other rare mutations may also make some women more susceptible to developing breast cancer. Gene testing reveals the presence of potential genetic problems, particularly in families
that have a history of breast cancer.
BODY
Obesity: After menopause, fat tissue may contribute to increases in estrogen levels, and high levels of estrogen may increase the risk of breast cancer. Weight gain during adulthood and excess body fat around the waist may also play a role.
Not having children: Women who have had no children, or who were pregnant later in life (over age 35) may have a
greater chance of developing breast cancer. Breast-feeding may help to ??????????????????????)!??????????????????????????????????????????????????????)!???????????????)
??????????????????)M???????????????????????????????????????????????????????????????????????????????????)1%MQe1)5?????????????????????????)!??????????)AIY%=UL?QIQ59QL)U?????????????????????????????????????)
??????????????????????????????????A!P?)A???????????L?????????????????????????????????????????????????)I???????????????) ???????????????)Q?????????????????????????????????????????????????????????????????????????????=??????????????????)?????????????????????????????????????????????????????????????????????????????????)M??????????????????????????????????)M??????????????????????????????????????????????????????????????????Q??????????????????????????????????????????????????????????????????5??????????????????????????????????????????]????????????)???????????????????????????????)Q???????????????????????????????????????????????????Q??????????????????????????????????????????(?????????????????????????????????????????????????????%?????????????????????????????????????????????????????????????????????)]????????????????????????)?????????????????????????????????????????????????????????????????????????????????????????????)?????????????????????????????????????=????????????????????????????????????????????????????????)???????????????????????)M???????????????????????????????????Q?????????????????????????????????????????????????????????????)????????????????????!??????????????????????????????????????????????????????????????????????)????????????????????????????????????????M????????????????????????????????????????????????????????)???????????????????????????????????????????????????()????e?????????????((0