By comparison , an adult male will produce 136,000 ng of estrogen on a given day ; .
The estrogen levels present in a 6 - ounce serving of beef from a treated animal is only approximately 3.8 ng .
By comparison , an adult male will produce 136,000 ng of estrogen on a given day ; whereas the estrogen levels present in a 6 - ounce serving of beef from a treated animal is only approximately 3.8 ng .