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.
Due to this potential hormone imbalance, soy can cause decreased energy and muscle mass.On the flip side however, soy protein isolate also possesses the complete amino acid argimine which like the branched chain amino acids found in whey protein can be broken down into antioxidants by the body.
So is soy dangerous or bad for your health? I would say that while overall soy can be beneficial to your health as part of your diet, I would only recommended you only consume it in moderation. Those who are interested in protein as a fitness and muscle supplement as opposed to a health supplement would be better off using whey protein over soy protein isolate, or if absolutely required, using a 50/50 mix of whey/soy protein powder. Also if you are lactose intolerant, soy protein isolate powder could be a good alternative as a supplement.
Lastly you are probably wondering where you can buy soy protein powder. Luckily for you Amazon has many different brands and flavors of soy protein, however our favorite brand would have to be Optimum Nutrition 100% Soy Protein.
You can get it here:
Optimum Nutrition 100% Soy Protein, Vanilla Bean, 2 Pound (Pack of 2)