[justinjlynn]

study conducted in 2005; n=35; p-values vary based on measurements; study conclusion is "[...] soy protein, regardless of isoflavone content, decreased DHT and DHT/testosterone with minor effects on other hormones, providing evidence for some effects of soy protein on hormones."; further study on larger/more diverse populations required.

Read study entirely and in context before judging effect size based on study alone but the data indicates further study is worth pursuing.

[heartbeats]

That's big if true - people usually suggest the isoflavones are to blame, rather than the protein itself.

[astrea]

I've noticed that's rather common with NIH studies. Small sample sizes and large conclusions.