Soy has been under constant watch since the United States Food and
Drug Administration (USFDA) approved the use of the following health claim:
“soy protein may reduce heart disease if a diet contains 25 grams of soy protein”,
which is equivalent to a food containing at least 6.25 grams of soy protein per
serving (FDA, 2000). The FDA states that all foods, including soy, can be very
beneficial to people, but when used inappropriately, such as taking concentrated
pills in excess can be harmful (FDA 2000).