The definitive answer to the question “Is grass-fed beef better for you than Grain-finished beef?” is: Who cares!!! If I was really worried about what is or is not good for me I would not eat beef at all, I would become a vegan.
Welcome to the Straight Dope Message Boads, markomark, we’re glad you found us. For future ref: when you start a thread, it’s helpful to provide a link to the column in question. Saves search time, and helps keep us all on the same page. No biggie, I’ve added a link at the bottom of your post, and you’ll know for next time. And as I say, welcome!