Phytoestrogens as enzyme inhibitors
There is growing evidence that phytoestrogens could
have a protective effect on the initiation or progression
of breast cancer by inhibiting the local production of
oestrogens from circulating precursors in breast tissue.
Indeed,in vitro experiments have shown that phytoes-
trogens inhibit the activity of key steroidogenic
enzymes involved in the synthesis of oestradiol from
circulating androgens and oestrogen sulfate