Electronic cigarettes (e-cigarettes) are the most widely used tobacco/nicotine product among US middle and high school adolescents. According to data from the 2023 National Youth Tobacco Survey, 2 million US middle and high school students (approximately 7%) reported using an e-cigarette in the past 30 days, including 10% of all US high school students (more than 1.5 million adolescents) and 4.6% of all US middle school students (550 000 adolescents).