Table 5 shows the nanograms of estrogenic activity in 1 pound of common foods. Foods eaten every day have much greater amounts of estrogen than beef.
Table 5. Estrogenic activity of common foods.
Food
Estrogenic activity in nanograms/lb of food
Soybean oil
908,000
Cabbage
10,896
Eggs
15,890
Milk
59
Beef from pregnant cow
636
Beef from implanted cattle
10
Beef from non-implanted cattle
7
Adapted from Preston, 1997.
Table 6 shows the daily production of estrogen in humans and the amount in implanted beef. The amount of estrogen consumed from eating beef is minuscule compared to what we produce in our bodies every day. The FDA has concluded the estradiol content in implanted beef is insignificant and of no safety risk. In addition, the FDA requires no withdrawal period prior to slaughter.
Table 6. Estrogen produced, nanograms per day.
Item
Estrogen produced, nanograms/day
Pregnant woman
90,000,000
Non-pregnant woman
5,000,000
Adult man
100,000
Pre-pubertal children
40,000
3 oz beef from implanted cow
1.9
Adapted from Preston, 1997.