A study in The Lancet says that ever since women cut down on their use of HRT beginning in 2002, rates of breast cancer fell.

Australian researchers discovered the downward trend there was among women aged 50 and older when they were more likely to start taking HRT.  This pattern has been repeated in other countries and, while some argue the reduction is due to improved screening, researchers in 2007 established a direct link between the cancer and HRT use in the USA.

The good news? Breast cancer, while still very common, is at an all-time low. Do you blame hormone replacement therapy?