Soy protein. estrogen myths ?

i've heard that taking soy protein will decrease testosterone and increase estrogen levels. is there any truth to this ? i don't eat or drink dairy products so i drink soy milk sometimes. i've started taking whey protein a few weeks ago but since whey is derived from milk, i was thinking of switching to soy or egg protein powders.

This is true.

I am making the assumption that you are consuming this protein for weight lifting (if not then my apologies if this seems irrelevant)? From my experience and research (albeit far from comprehensive) using a whey protein with a bit of egg based protein will give you better results anyway.

However, if you are concerned about your protein intake and don't want to use these other products then you're going to have to find an alternative source. There aren't many unfortunately and you should probably speak to a nutritionist who specialises in sports nutrition.

You might have to consider eating more protein rich meats to make up for the lack of protein shakes such as beef jerky, tuna fish, turkey etc.

Incidentally, it is believed that consuming brocolli helps to slow down your body's production of estrogen and thus allows you to achieve better use of your natural testosterone. Broccolli also contains natural cancer combatant agents so it's a win win situation! I once heard that pears may have a similar effect in slowing estrogen production but I don't think this has been proved scientifically.

Hope this helps.

No one really knows if eating a lot of soy can cause cancer. They say it can actually protect you, but in certain amounts it can cause cancer. From what I understand, eating soy is fine, but taking soy supplements might do more harm than good.

Yes it true. soy has estrogenic properties that's why it's not recommended for those with estrogen related problems. (like belly fat, cysts, fibroids)