Had holiday gathering with multiple family members and found out that many had metastatic breast cancer. what can i do to prevent it?

Chemoprevention: Have genetic test done .Also have your mammogram done and check with your doctor if u will qualify for preventive medications for breast cancer like evista, (raloxifene) tamoxifen and aromatase inhibitors.Usually an oncologist assess the risk of developing breast cancer depending on different risk factors and facts about patient histories

Genetic testing and: Counseling. There are two known genes (brca-1 & -2) that run in families, and there are other familial clusters without ientified molecular/genetic signatures. Not every hospital has this, but nci designanted cancer centers usually do. The tests are blood tests for the family, and counseling about impact. They will pedigree the family and find patterns and explore.

Genetic testing: Yes, i agree with dr turrisi and zafar. Talk to your family members who have breast cancer. They would need to have genetic counselling and genetic testing - to see if they carry the brca 1/2 gene mutation etc. If they carry this gene mutation, then you should ask the counsellor what your risk is and then you would probably need to get the test as well. You need prevention if your test is +.