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Breast Cancer

Estrogen and breast cancer

03/17/2000

Question:

I have read a lot about breast cancer, and estrogen is often mentioned as a cause. I started my period at 11 and a half years old and have always had short cycles (23-25 days), which means I have had more periods than most women my age. My first child was born when I was 28. Do you think I am at any increased risk for cancer because of the estrogen I`ve been exposed to?

Answer:

Women who started their menstrual cycles before age 12 or who went through menopause at a late age, after 50, have a slightly higher risk of breast cancer. You did not identify your age or whether you are in menopause. Having your first child at age 28 does not increase the risk of breast cancer. Those who have had no children or who had their first child after age 30 have a slightly higher breast cancer risk.

Other risk factors for breast cancer that put women at a higher risk are those whose close blood relative have this disease. Blood relatives include both the mother`s and father`s side of the family. A woman`s risk is doubled if her mother, sister, or daughter has had breast cancer. A woman who has had a personal history of breast cancer has a 12 times higher risk. A previous biopsy result of atypical hyperplasia increases a woman`s breast cancer risk. These are the most serious risk factors. 75% of breast cancer occurs with no known risk factors just because of being a woman. Some women with one or more breast cancer risk factors never develop the disease.

Early screening of women lead to detection of breast cancer at an early stage. There is a 95% cure with early detection and early treatment. The three methods of detection are an annual mammogram at age 40, breast self exam every month starting at age 18-20, and a physical exam by a professional doctor or nurse every year at age 40. High risk women should start yearly mammograms and physical exams at age 30.

Thank you for your question. I am always happy to repeat the need for early detection in our efforts for cure of this disease that affects one in 8 women.

For more information:

Go to the Breast Cancer health topic, where you can:

Response by:

University of Cincinnati Janet Trigg, RN, MSN, EdD
Formerly:
College of Nursing
University of Cincinnati
Janet Trigg, RN, MSN, EdD