national youth tobacco survey 2023 Product Use and Associated Factors Among Middle and High School Students — United States, 2019 2023 CDC Shows HS Vaping

A small number of reports can trigger a wider investigation to determine whether a problem is widespread and whether its serious

Known health effects of nicotine: Nicotine is addictive Nicotine is harmful to developing fetuses Nicotine can harm adolescent brain development, which continues into the early to mid-20s Use exposes the lungs to a variety of chemicals: Including those added to e-liquids, and other chemicals produced during the heating/vaporizing process The aerosol created by e-cigarettes can contain ingredients that are harmful and potentially harmful to the publics health, including: nicotine

We investigated, also, the presence of metals, in particular heavy metals, in recovered samples by means of atomic absorption analysis

US 4597961, Etscorn, FT US 4920989 "Adverse Decisions in Interference"