This study documents the association of soy formula feeding in infancy with autoimmune thyroid problems. (westonaprice.org)
Levels of manganese found in soy formula are 50 - 80 times the amount found in breastmilk or dairy formula. (westonaprice.org)
Another study found that children fed soy formula as infants were more likely to be diagnosed with autoimmune thyroid disease as teenagers. (positivemed.com)