In the new study, researchers from Penn State University College of Medicine analyzed blood samples from six Juul users who were asked to puff on their device every 20 seconds for 10 minutes — a total of 30 puffs.
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Juul Delivers More Nicotine Than Other E-Cigarettes: Study
In the new study, researchers from Penn State University College of Medicine analyzed blood samples from six Juul users who were asked to puff on their device every 20 seconds for 10 minutes — a total of 30 puffs.
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