In today's health matters, African American women may be able to lower their risk of an aggressive and difficult to treat breast cancer if they breast feed.

Researchers followed a group of 47,000 African American women from 1996 to 2009. Every two years, participants filled out questionnaires about their breast cancer risk factors.

The team discovered the more children an African American woman had, the more likely she was to develop estrogen or progesterone-negative cancer.

They also discovered if that woman breast-fed, her risk of getting that type of cancer decreased significantly.

Findings appear in the journal 'Cancer Epidemiology, Biomarkers and Prevention.'