I'm looking to buy a new protein/weight gainer, but all I have heard about are people complaining that this product or that product is poisonous. Studies have found traces of harmful substances like arsenic and such, but is it really as harmful as everyone claims? I really liked cystosport's protein products, especially their "monster" line. I'm sure many companies do this, and a friend said jokingly "The air we breathe is toxic, let alone any supplements or proteins." I definitely agree with this, but is there any harm in taking these now?