How funny you posted this when I was just making the connection myself.  Ariel
is now 7, I nursed her until she was 3.  I have always had something like
colostrum that was expressible in drops since she weaned.  I started taking
Gingko Biloba after the article about it's use in the prevention of
Altzheimer's disease came out (my dad died of Altzheimer's 2 years ago).
Lately my breasts have been full and painful and I have begun leaking quite a
lot when they are that way.  I thought it was estrogen supplements or caffeine
(cystic breasts) but I didn't make a connection with the Gingko Biloba.
I'll be really interested in what others have to say.
Marie