Because the FDA wants to make sure you get your USRDA of toxins.
http://www.livestrong.com/slideshow/1007800-11-banned-food-ingredients-still-allowed-us/?utm_source=articlebottom&utm_medium=1#slide-13
Aside from toxin removal anyone else here discover the benefits of a regimen of Nascent Iodine (http://www.integratedhealth.com/hpdspec/nascent-iodine.html) ?
In promoting a healthy endocrine system it's also supposed to be excellent in preventing, reversing HAIR LOSS.
With over 90% of Americans being highly deficient BY DESIGN a recent SEARCH @ Susans has produced NADA discussion!