yes, but rBGH (bovine growth hormone) is not a good hormone for humans to be consuming. Kids are entering puberty earlier, for example, than in times past partly because of the vast amount of hormones in meat and milk.
Plus, it causes sickness in the cows because of over production of milk, which requires large doses of antibiotics, which also find their way into meat and milk
did you sign up just to defend hormone supplements?
by the way, rGBH is not estrogen.
it is bovine growth hormone, produced in the pituary glands of cattle, but given in large dosages like anabolic steroids.
and if these supplements were so safe, why are they banned in Canada, Japan, Australia and the European Union?