He also investigates the life and impact of the world 's most famous cocaine addict , Sigmund Freud .
Streatfeild goes into lucid detail about the history that the coca leaf had with the Native Americans and their Spanish overlords .
Streatfeild also investigates the life and impact of the world 's most famous cocaine addict , Sigmund Freud .
Streatfeild goes into lucid detail about the history that the coca leaf had with the Native Americans and their Spanish overlords .