Decline in Horomonotherapy Prescriptions Results in Decline in Breast Cancer

In one area the incidence of Breast Cancer has declined over the last 8 years. A clinical study running since 1974 demonstrates a corresponding decline in breast cancer when compared against the decline in hormone replacement therapy.

Annual Number of Prescriptions
for Female Hormonotherapy
2001 - 12.6 Million
2002 - 11.6 Million
2003 - 8.5 Million
2004 - 6.7 Million
2005 - 5.9 Million

The upper lines of the chart on the right illustrates in yearly rates the prevalence of estrogen-only and estrogen/progestin–containing hormone therapy use, the lower lines demonstrate the incidence of invasive breast cancer in members of the Kaiser Permanente Insurance Company group for Northern California (KPNC) members, the 13-county KPNC client study area, and the overall stats for the state of California, from 1994 to 2004.