Polyphenols besides inhibiting non-heme iron absorption in a dose dependent manner can also inhibit heme iron absorption in a dose dependent manner.

Neurological Illnesses, the Transsulfuration Pathway and Epigenetics
A new way of looking at schizophrenia and other neurolgical illnesses that addresses the fundamental biology of the illnesses
Polyphenols besides inhibiting non-heme iron absorption in a dose dependent manner can also inhibit heme iron absorption in a dose dependent manner.