That means treated humanely and fed a good balanced diet. Contented cows is more than just a saying.
Soy isn't as healthy as people think. My doctor told me to avoid it because of a variety of reasons, not all related to my health conditions.
Besides human beings have a evolutionary history of being meat eaters. We need to ingest some animal products in our diet to be healthy.
Do your own google search. I found most of the information here on quite a few other sites.
http://www.electroherbalism.com/Naturopathy/Therapies/Diet/Soy/NewestResearchonwhyYouShouldAvoidSoy.htm
And this:
http://www.healingdaily.com/detoxification-diet/soy.htm
"The core of their concerns rests with the chemical makeup of soy: in addition to all the nutrients and protein, soy contains a natural chemical that mimics estrogen, the female hormone. Some studies in animals show that this chemical can alter sexual development. And in fact, 2 glasses of soy milk/day, over the course of one month, contain enough of the chemical to change the timing of a womans menstrual cycle."
>SNIP<
"Who has something to gain from the consumption of soy? Perhaps companies like Monsanto which produce the genetically modified soybean seeds. Perhaps companies like Cargill Foods or SoyLife which produce countless soy-based foods. Or soybean councils in several states which represent farmers who grow this new, emerging bumper crop. And, of course, all of the companies which are constructing factories all over the world to do the processing which is necessary to make soybeans edible."