E.S.
I use it.
I have massive amounts of 'medium' hair-just past my shoulders.
I lose hair no matter what I use (I rotate between several products.) So don't know what to tell you about that issue.
I know it is all my mom uses and she has thickish hair but not much of it-I can't imagine she would use it if it was causing her to lose more of it.
There are lots of other sulfate/paraben free shampoos to pick from, too...
I really like Giovanni. They have 2 varieties I use regularly.
One is their 50:50 clarifying shampoo and conditioner and the other their Smooth As Silk line.
http://www.giovannicosmetics.net/h-organic.asp?prodtype=H...
HTH!