The main isoflavone in soy, genistein, deactivates human thyroid peroxidase (TPO), an enzyme, and interferes with T3 and T4 synthesis.
Of the two
main isoflavones, genistein and diadzein, the former seems to be more effective in preventing osteoporosis.
Not exact matches
Soy Part 1 —
Main Controversies Breast Cancer Dementia Infant Formulas Feminizing Characteristics Thyroid Soy Benefits Soy Part 2 — Research The
Isoflavones Soy Servings Soy Foods Benefits of Soy Lowering...
The
main problem is that it contains
isoflavones, which are akin to the dominant female hormone, estrogen.
There are a variety of
isoflavones in soy, but several of the
main ones are biologically inactive until they hit your intestinal tract (specifically, these compounds are activated by your intestinal bacteria).