According to the CDC excessive alcohol use is the 3rd leading lifestyle-related cause of death in the U.S.. Deaths from marijuana use, on the other hand, are rare. Yet marijuana, not alcohol, is considered a schedule 1 narcotic, which is defined by the Controlled Substances Act as the following: The drug or other substance has a high potential for abuse. The drug or other substance has no currently accepted medical use in treatment in the United States. There is a lack of accepted safety for use of the drug or other substance under medical supervision. Why is marijuana on this list but not alcohol?