* Research has shown that babies who have been fed soy-based formulas were at higher risk for developing type-1 diabetes and thyroid disease later in life. Soy-based formulas also contain up to 1000 times more aluminium than non soy-based formulas.
*Soy has been linked to a myriad of health conditions such as infantile leukaemia, various forms of cancer, type-1 diabetes, malnutrition, thyroid dysfunction and even erectile dysfunction.
*Soy contains a large amount of anti-nutrients (otherwise known as toxins). One of these is what is referred to as enzyme inhibitors. Enzyme inhibitors block the action of the enzymes which are required to digest proteins. Even cooking the soy at high temperatures does not break down these inhibitors. As a result, consuming soy and soy products can lead to conditions such as reduced protein digestion, excessive bloating, a deficiency of essential amino acids, abnormal thyroid functions, a higher risk of breast cancer in women who have had ovaries removed and abnormal blood clotting. Mineral deficiencies of calcium, magnesium, copper and zinc have also been reported. Raw soybeans contain trypsin inhibitors and can irritate the human digestive system if not cooked sufficiently.
*That being said, the only safe forms of soy to consume are those which have been properly fermented, such as Japanese natto and properly prepared Chinese tofu.
* Soy may lower the risk for [[Breast Cancer]] and [[Prostate Cancer]]. However One caution: Some women with breast cancer should avoid soy – talk with your doctor.