Study links birth-control to rare breast cancer- TN Triple Negative, 2009

Arguably this report was published some years ago in 2009 and whether it has any real validity is questionable, BUT it is certainly food for thought. It seems clear that additional research does need to be undertaken and that these correlation of factors need to be explored further. 

Here is the link:https://www.fhcrc.org/en/news/center-news/2009/05/birth-control-rare-breast-cancer.html