researchers discovering HOW Hormone replacement therapy causes breast cancer
 

It is about TIME.....!
 

http://her2support.org/vbulletin/sho...ight=progestin

We've had many discussions over time here about the progesterone receptor (PR), natural progesterone, and synthetic progesterone. Because studies use the term "progestin", one can't always tell whether they are referring to the synthetic progesterone or the natural progesterone, and that has added confusion to our discussions.

Here are a few threads from the past:

http://her2support.org/vbulletin/sho...ight=progestin

and

http://her2support.org/vbulletin/sho...ight=progestin