Soy Milk May Lead To Goiters And Thyroid Issues
Soy caused thyroid suppression and goiters in the body, according to a 1991 study, where healthy participants had these results after consuming a small amount of soy for 3 months (Nippon Naibunpi Gakkai Zasshi 1991).
Sources:
http://www.westonaprice.org/health-topics/studies-showing-adverse-effects-of-isoflavones-1950-2010/
http://empoweredsustenance.com/avoid-soy-milk/
http://www.thehealthyhomeeconomist.com/why-soy-formula-even-organic-is-so-dangerous-for-babies/