If you buy soy milk, be sure to look at the labels. Most have added sugar and chemicals. The only ones that I know of that are organic, and whose ingredients contain only soybeans and water are: Organic Edensoy, Unsweetened; and Westsoy Organic Unsweetened.
GreenGiant from the Fuhrman forums researched these brands and found the following:
Edensoy organic soymilk was the top choice by the Cornucopia Institute. This institute's report on soybeans is eye opening and it rates Edensoy as the only product generally available nationally with a 5 of 5 rating:
"Behind the Bean: The Heroes and Charlatans of the Natural and Organic Soy Foods Industry"
http://www.cornucopia.org/soysurvey/OrganicSoyReport/behindthebean_color_final.pdf
Interesting, WestSoy and many others are rated 0 of 5 because they refused to disclose their source of soybeans.
Last week I bought the WestSoy because it was on sale. Today I bought Edensoy because the WestSoy was all gone. I guess I"ll go with Edensoy in general, assuming it tastes okay.