Soy, what are the good and bad effect?

According to Dr. Mercola article about Soy, there are advantages and disadvantages of taking soy in foods on our body depending on the amount and whether our body will benefit from it.

I've read it here http://www.mercola.com/article/soy/index.htm

Tell me about you insights, should I follow it?

[Renee Radenberg]

As with all foods, you need to eat in moderation and have variety in the foods you choose daily so you do not have issues with one type of food.