Like other whole grains, soyfoods are rich in B-vitamins, particularly niacin, pyridoxine and folacin. Soymilk is well fortified with vitamin B12 which makes it a prominent source of this essential nutrient.
Read more: Health Benefits of Soybean - Uses - Health Implications - Reference http://www.medindia.net/patients/lifestyleandwellness/health-benefits-of-soybean.htm#ixzz3QfkMlUM2