Soy Protein is a very common protein for vegetarians and other health enthusiasts. But how good is it for Bodybuilders?

About Soy Protein:

Soy protein comes from soybeans. At one point soybean plants were used for fertilizer. In the 1970’s the soy companies started to try and change its reputation. United Soybean Board (USB) has spent millions of dollars since the 70’s to lobby and promote Soy, even though it is really a terrible source of protein.

Negatives of Soy Protein:

They increase your estrogen levels through Phytoestrogens, which mimic estrogen. The Phytates in Soy also block the uptake of minerals. Soy protein also has enzyme inhibitors, making protein digestion more difficult. It also contains Haemaggluttin, which increases red blood cell clumping and inhibits oxygen uptake and growth.

As a bodybuilder the last thing you want is something that raises your estrogen levels. Estrogen promotes fat gain, feminization, and certain cancers. It also doesn’t contain the dozens of immune enhancing and anti-cancer subfractions that Whey protein contains.