One major question that often gets asked is what is the difference between soy protein isolate powder and whey protein? Are there any differences, or are they essentially similar as both a fitness and health supplement? Is soy protein powder bad? Where do i even find soy isolate protein powder? What are the dangers of soy products?
Soy protein is a far different protein from whey protein, as it is derived from soybeans as opposed to the milk/cheese that whey protein is produced from. Soy protein isolate powder(like whey protein isolate) is the highest quality type of soy protein. It has the largest amount of protein by weight compared to concentrate, which is the same as whey.
However soy, especially as a fitness supplement can have some detrimental effects.
Extensive testing has suggested that the high levels of isoflavones present in soy proteins results in a decreased production of testosterone in the human body; the hormone required to build lean muscle mass.