The estrogen. I can't be bothered searching for it again but I did find one article showing that a serve of milk had less estrogen than many common fruits and vegetables.
Like brick said the study is a piece of shit with 7 people blokes. Hardly a definitive study.
The ideal cow calves and comes into the herd. They get pregnant by day 85 and milk through to day 305. Dryed off and calve 60 days later and that gives you a 365 day cycle.
This bloke makes it sound like before farming cows never got pregnant while they gave milk. They did.
He says the alternative medicine community has questions about milk. Ok why ask alternative medicine people, how about ask a proper doctor or scientist. Do we ask an alternative mechanic to fix your car, do we get an alternative dentist to pull a tooth.
He says milk is not what it once was? Explain how selective breeding effects anything, its done because people want cheaper milk.
Milk is processed different today. Yes it's pasteurized so people are not dying from food poisoning, what a backward step that is.
Drugs to increase production. Well some parts of America are allowed to use bst (cow growth hormone) it increases production. Never been allowed here or in most parts of the world and is being phased out anyway. Other drugs we have strict milk withholds where the milk cannot be sold if they are used, milk gets tested every day, if you get caught you are in the shit.
Then he goes onto throw out a heap of unproven alternative medicine negatives against milk and then promote organic milk. Lol. Not even going to start on that.