A new study shows that rates of ovarian cancer decreased around the same time that the use of hormone replacement therapy dropped off.
Overall, for women over 50, rates decreased by 21 percent from 1995 to 2008, from 38 cases out of 100,000 women to 30 out of 100,000.
However, the author cautions that this does not prove that hormone replacement therapy played a role in causing ovarian cancer.
Read an article about the study here
Read the abstract of the study here