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Among those at risk for initiation, adolescents and young adults were more likely than adults aged 26 or older to have used smokeless tobacco for the first time in every year between 2002 and 2014

A panel drug test may include a mouth swab component as part of a broader screening for multiple substances at once

Snus is a moist tobacco that uses steam-pasteurization to reduce the presence of harmful bacteria

However, that is not the only disorder it can lead to

A descriptive analysis of all the variables relevant to the study was performed, namely socio-demographic characteristics, family history, environmental factors (ETS exposure), past medical history, occurrence of respiratory symptoms (cough and wheezing), asthma diagnosis, physical examination and spirometry results

Nature 517 , 576582 (2015)