I absolutely love beef and would devour that stuff every day, caveman style, but for some, the cost really is an issue.
For example in Sweden, grain-fed beef is 4$/lb, while grass-fed is 12$/lb. That's 3 times the cost!
I basically just skip it altogether and endure, but still enjoy salmon instead. (at 5$/lb)
For OP: You really can't compare the two. There are nutrients in grass-fed beef that are basically non-existant in grain-fed.
Cows fed a deficient diet doesn't develop properly. They are not healthy and developmentally disabled (for lack of a better word).
Imagine a person raised on grains... How healthy and functional would that person be? It's the same thing.
After removing grain-fed beef from my diet, I feel much better. My inflammation and body-fat is down while muscle mass and well-being has increased.
I don't believe we've identified all the molecules which are responsible for this effect. But science is the study of cause and effect, and there's definitely a correlation between eating sick animals and feeling like shit.
Error: I read "grain-fed beef" in the title and then posted. But, despite this my opinion still stands. Any malnourished animal's meat/organs will lack many of the nutrients it has the potential to develop, and potentially even be detrimental to your health.
Edited by chung_pao, 11 May 2013 - 10:17 PM.