If the benefits of grass fed meat are in the fatty acids, and whey protein has no fat in it, is it worth paying the extra $$$ for grass fed whey protein versus a non grass fed source of whey? (Thanks Ben)
Grass-Fed whey that is cold processed will undenatured & much lower in heavy metals, rbgh free and glyphosate free. Sourcing and processing of whey can have a big effect on the finished product. Most consumers don't realize that the majority of whey proteins on the market are processed with very harsh acids to achieve high purity rates. The chemical processing will introduce heavy metals and denature the protein.
here is a good overview on grass fed vs grain fed whey