4 Your Health: Teens clueless about nicotine amounts

Teens are unaware how much nicotine is in the products they are using.
Many teens do not know how much nicotine is in the products they’re using.
Researchers surveyed over 500 teens about their use of tobacco, E-cigarettes and marijuana. 40 percent of those who reported using nicotine-free products had levels of the nicotine by-product, cotinine, that was higher than the cutoff level used for identifying non-users.
Those who used E-cigarettes also reported more marijuana use than non E-cig