If you search the 13000-22000 figure cited in the article AOU linked, you can find the original study (https://pubmed.ncbi.nlm.nih.gov/9217716/). And also a number of other articles that all seem to downplay or hand wave away the effects of soy-based isoflavones.
Circulating concentrations of isoflavones in the seven infants fed soy-based formula were 13000-22000 times higher than plasma oestradiol concentrations in early life, and may be sufficient to exert biological effects, whereas the contribution of isoflavones from breast-milk and cow-milk is negligible.
Emphasized text seems to be absent from all the other articles that reference the original, oddly.
If you search the 13000-22000 figure cited in the article AOU linked, you can find the original study (https://pubmed.ncbi.nlm.nih.gov/9217716/). And also a number of other articles that all seem to downplay or hand wave away the effects of soy-based isoflavones.
>Circulating concentrations of isoflavones in the seven infants fed soy-based formula were 13000-22000 times higher than plasma oestradiol concentrations in early life, and **may be sufficient to exert biological effects**, whereas the contribution of isoflavones from breast-milk and cow-milk is negligible.
Emphasized text seems to be absent from all the other articles that reference the original, oddly.
(post is archived)