It represents the time from the end of ventricular depolarization to the start of ventricular repolarization. ST elevation may indicate myocardial infarction or pericarditis. ST depression may indicate ischaemia.
Marijuana has been illegal for less than 1% of the time that itâs been in use. Its known uses go back further than 7,000 B.C. and it was legal as recently as when Ronald Reagan was a boy.The marijuana (hemp) plant, of course, has an incredible number of uses.arijuana has been illegal for less than 1% of the time that itâs been in use. Its known uses go back further than 7,000 B.C. and it was legal as recently as when Ronald Reagan was a boy.
Voters in Washington, D.C. also approved recreational marijuana, but the law needs to be approved by Congress. Medical marijuana, the decriminalization of marijuana possession or both have been legalized by 27 states and the District of Columbia so far. There are 23 states that still prohibit marijuana outright. Marijuana was designated a Schedule I drug in 1970 with the Controlled Substances Act. The legislation from Congress made it illegal to manufacture, distribute or possess marijuana anywhere in the United States.