The risks associated with passive smoking have been less readily accepted than the health - risks of cigarettes and
other tobacco products, but research shows ambient smoke still
contains carcinogens and toxic components.
The neurodevelopmental and social backdrop of early adolescence may promote risk - taking behavior, 25 and neural plasticity may sensitize the adolescent brain to the effects of nicotine.31 Hence, adolescent never smokers exposed to nicotine - rich e-cigarette aerosols and the pleasant sensations associated with vaping could be more liable to experiment with
other nicotine -
containing products, including combustible
tobacco.
In the United States, the Dietary Supplement Health and Education Act of 1994 provides this description: «The Dietary Supplement Health and Education Act of 1994 (DSHEA) defines the term «dietary supplement» to mean a
product (
other than
tobacco) intended to supplement the diet that bears or
contains one or more of the following dietary ingredients: a vitamin, a mineral, an herb or
other botanical, an amino acid, a dietary substance for use by man to supplement the diet by increasing the total dietary intake, or a concentrate, metabolite, constituent, extract, or combination of any of the aforementioned ingredients.