The following is a list of articles and abstracts that address the
risk of breast cancer with conventional hormone
replacement therapy. The synthetic chemical, progestin, is often
used as part of hormone replacement therapy and is thought to be
the major culprit in the increased incidence of breast cancer.
Some of the following studies show a slight increase in the incidence
of breast cancer with estrogen alone, others do not (even with up
to fifteen years of use).
