Grain-fed cattle in the US may be fed mold toxin pellets (zeranol) which act as a mycoestrogen, increasing their fat estrogen content.

“in grain fed cattle they will put a mic oh they'll put like a mold toxin pellet in the ear of the animal I think it's called zero low known and that pellet affects the the metabolism the animals so significantly that they can feed the animals 30% less feed or the animals will get 30% fatter on the same amount of feed because this is a natural myco estrogen so it's an estrogen mimetic compound from a mold and it's considered it's legal for them to do it”

“the grain fed animals are getting fed grains which have mold on them which can have micro estrogens which can have atrazine on them which is an estrogen they're given these pellets in their ear which are estrogens and it's very clear from that study at least looking at that today that we see higher levels of estrogen much higher levels of estrogen in the fat of grain fed animals in the u.s.”

“fusarium is another mold that makes sierra lenone people freak out about soy you want to talk about something crazy estrogenic sierra lenone they'll put it in the ears of cows i know dave asprey talked about that years ago when he was promoting his moldy documentary and they'll use it to fatten up cows by affecting their estrogen so you can breathe zerolinone in it's crazy”