What were the short- and long-term effects of Agent Orange as noted in the nonfiction book, Most Dangerous?

A chemical commonly known as Agent Orange was sprayed in the thick jungles of Vietnam where enemy guerillas secreted themselves so they could ambush U.S. and South Vietnamese soldiers with sniper fire. The strategy for dispersing the chemical was to expose the guerillas who took potshots at American troops by killing all the vegetation. The chemical proved to have long-lasting debilitating effects on those who were exposed to it including U.S. soldiers.