Here's some information I found on the web about arrowroot.

When I first started lowcarbing I bought some arrowroot flour when I was shopping one day because I thought I had read where it was an acceptable product for lowcarbers. To make a long story short, I ended up reading up on arrowroot and felt it didn't belong in my new woe, so I took it back unopened.

http://www.fatfree.com/cgi-bin/fatf...ROWROOT%20FLOUR

Hope this helps some.