Like for all things take in moduration. More researc is necessary :
= The negatives of soy are:=
* Calcium levels are not the greatest. Even though they do add calcium to soymilk it is still not as healthy as natural occurring calcium but calcium can be obtained from other sources like green leafy vegetables and almonds to name a couple.
* When manufacturers of soy protein isolates and supplements recommend that people consume 100 grams of soy protein a day (the equivalent of 7 or 8 soyburgers), they are ignoring the unknown effects of overdosing on isoflavones. I believe it's probably safer, until more is learned, to avoid concentrated soy supplements entirely.
= There are benefits to soy such as:=
* Soy is high in proteins and contains more fiber than cows milk due to the fact it's made from beans