Description:According to a national study by the Harvard School of Public Health, the only significant drop in breast cancer rates happened among white women over 50 in affluent U.S. counties. The women had an important third factor. They had the kind of tumor an estrogen-rich environment will nourish. Breast cancer rates went down as much as 10 per cent in this group.
Cathy Marshall explores this new study and speaks with medical professionals about the pro-longed use of hormone therapy to treat menopause(3:50)