Reply #4: I don't know that Kaiser Permanente could use this information

[Arkansas Granny]

but elsewhere in the article that I read it said:

While there has been much research into caffeine and miscarriage - some of it dating back to the 1960s - no studies have been definitive, and the effect of caffeine, and coffee in particular, on miscarriage has been a subject of controversy.

http://www.sfgate.com/cgi-bin/article.cgi?file=/c/a/2008/01/21/MNIUUHS4F.DTL

If they've been looking for cause and effect of caffeine on pregnancy for over 40 years, why has the link just been discovered. I would have to see more research on a larger sample group before I accept the findings of one study.