Another chemical to consider is Aspartame. It's routinely used as a dietary supplement in most sugar free sodas. It's banned in some countries because of its harmful health effects, cancer being one. Of course, Monsanto disclaims this.
I believe the growing number of health problems we are seeing are a result of chemicals being used with little regard for human life.

Every time I laugh, cough, or sneeze, my radiator leaks or my exhaust backfires.