Cannabis, also known as marijuana, is a Schedule I controlled substance that has various street names. It is most commonly smoked or ingested but can also be vaporized. Short term effects include euphoria and impaired coordination while long term effects include increased risks of respiratory illnesses and cognitive decline. Though addictive for some, it has medical uses such as relieving nausea and stimulating appetite. Nearly 40% of Americans have tried cannabis at least once with over 7 million using daily or almost daily as of 2012.