i heard soya secrete oestrogen rather than testosterone

[michael]

whether body building aspirants can take whole soya bean ( soaked in water)??..i heard that soya stimulates oestrogen rather than testosterone is that correct??

[Rob]

A study published in 2005 concluded that a 12 week supplementation with soy protein does not decrease serum testosterone or inhibit lean body mass changes in subjects engaged in a resistance exercise program [1]. Body builders may benefit from the lower digestion rate of soy protein, resulting in a more gradual release of amino acid. Intake of soy protein consumption may provide additional health benefits including a reduced risk of heart disease and some types of cancer.

1. Effect of protein source and resistance training on body composition and sex hormones. Journal of the International Society of Sports Nutrition. 2007 Jul 23;4:4.