Mom died of breast cr @47 due to estrogen tumor.she smoked/on pill most of life/had a baby at 40. i don't smoke/or on pill. i am 40. am i better off?

Depends: Smoking and oral contraceptive use are population risk factors for development of breast cancer..Individual risk should be discussed in-person with an md.

Maybe: Your mother had risk factors that could account for her early breast cancer. That said, she had it while still quite young. You should visit a professional with expertise in risk assessment who will take a good personal and family history, do an exam, and go over your cancer risk and what to do about it. Best to you.

Always: Always better to avoid smoking...Always a good idea , with risk factors, to follow-up regularly with your family doc/internist/ob/gyn...