Another important correction for the title - "in U.S.". Americans are infamous for drug abuse, according to National Center for Drug Abuse statistics 50% of peo

Another important correction for the title - "in U.S.". Americans are infamous for drug abuse, according to National Center for Drug Abuse statistics 50% of people 12 and older have used illicit drugs[1], which definitely affects their ability to focus. [1] https://drugabusestatistics.org/ https://drugabusestatistics.org/