A year ago, my aunt died from breast cancer.We are disgusted knowing that she was the first family member to suffer from it.In fact,before she died she had undergone a series of chemotherapy sessions and seen some improvements in her health.It bothers me a lot.What causes breast cancer, by the way?

Sorry to hear about your Aunt's loss.

I think it is mostly genetic and some external trigger like excessive xrays etc.

-F

Thanks farce.It could be one of the reasons but then turning back from our family history, no one except my aunt has suffered from it.The doctor said, her lifestlye might be the main cause .I can't tell if it's true because she don't have any vices ( drinking liquor or smoking etc.)What do you think?