A: In a 2018 study conducted by the CDC of the more than 10,000 workers surveyed, 14.6 percent answered yes to the question, “Did you use marijuana or hashish in the last 30 days?” The National Survey on Drug Use and Health reported marijuana drug use increased by 2.9 million users for a total of 52.2 million users within the U.S. in 2021. (2, 6)
