There have long been questions about the use of progesterone supplements for women who have experienced recurrent miscarriages. It was thought that progesterone treatment could help in such circumstances, and it has been used for decades. Now a team at the University of Birmingham have conducted a trial which shows that it doesn’t improve outcomes for women who have had a history of recurrent miscarriages. However, the research shows that it doesn’t do any harm either, so women who have used progesterone supplements do not need to worry about this.
You can read more about the five year trial, led by Professor Arri Coomarasamy, and published in the New England Journal of Medicine on the University of Birmingham website.