Hormones are one of the MANY things pumped into dairy cows and the list includes antibiotics, medications, and all kinds of pesticides that goes into their foods. Really I don't think any of those is worse than the others in terms of health and the environment. If I had to choose I would go for organic , but really that's not even good for you pasteurized. Sorry, not trying to squash your progress. For truly healthful milk you need raw milk from healthy pastured cows.