![image](licht1e_fig04_un02.jpg)
Ancient Opium
Wall art from the Tomb of Horemheb in Egypt’s Valley of the Kings depicts a person holding two round vessels representing poppy flowers. The ancient Egyptians used the poppy opiate morphine for pain relief, but its therapeutic role was controversial (El Ansary et al., 2003).
© Gianni Dagli Orti/Corbis