2008-07-24 Soy-based foods may lower sperm count: study

http://uk.reuters.com/article/2008/07/24/us-infertility-soy-idUKN2337323420080724

(Reuters) - Eating a half serving a day of soy-based foods could be enough to significantly lower a man's sperm count, U.S. researchers said on Wednesday.

The study is the largest in humans to look at the relationship between semen quality and a plant form of the female sex hormone estrogen known as phytoestrogen, which is plentiful in soy-rich foods.(Read entire article)