One of the worst problems with soy comes from the fact that 90 to 95 percent of soybeans grown in the US are genetically modified (GM), and these are used to create soy protein isolate. Genetically modified soybeans are designed to be ‘Roundup ready’, which means they are created to withstand heavy doses of herbicides without killing the plant. The active ingredient in Roundup herbicide is called glyphosate, which is responsible for the disruption of the delicate hormonal balance of the female reproductive cycle. Pregnant women should avoid soy milk as glyphosate is toxic to the placenta. If the placenta has been damaged the result can be miscarriage or birth defects. Feeding your infant soy-based formula can cause a host of health problems including behavioral problems, food allergies and digestive distress, early puberty and fertility problems, asthma and cancer.
If you are going to drink soy milk always buy organic. Other alternatives are almond milk, rice milk or organic and raw cows milk.