The researchers collected data from the National Survey on Drug Use and Health, an annual representative poll of U.S. residents 12-years or older. Researchers reported that teens trying alcohol or tobacco rose from 16-years to 17-years old in 2017. Meanwhile, adolescents tried heroin or cocaine at an average age of just over 17 in 2004. That figure rose to about 18-years for heroin and 19-years for cocaine by 2017. The study concluded rising ages for first-time use of the following drugs: alcohol, cocaine, ecstasy, hallucinogens, heroin, inhalants, LSD, marijuana, stimulants, and tobacco products.