"Agent Orange" is the American code name for an herbicide called dioxin which was distributed by American planes in order to clear enemy forests in the Vietnam war.
The effects of dioxin on human beings is both physical and mental, but worst of all, trans-generational; which is to say that once in the human bloodstream and environmental air supply of an effected region, dioxin can effect children born generations from now.
Victims of Agent Orange suffer from a tremendous range of defects, it is common to be born without eyes, limbs, organs. Other victims suffer from nervous/ spinal disorders or mental disorders comparable to severe retardation or autism.
Such defects cannot be reversed or avoided- only cared for and nurtured.