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Unlike the other entries on this list, most of their producers are smaller scale

W., Otterbein, L

Tobacco smoking is well known to be a major risk factor for various cancers, lung and cardiovascular problems, and is also linked to other health problems, such as complications in pregnancy, low sperm count in men, oral problems, and increased likelihood of cataracts

doi:10.1136/tobaccocontrol-2018-054389

GC-MS (Gas Chromatography-Mass Spectrometry): A precise laboratory technique that separates and measures compounds like nicotine and cotinine in samples

We know that 95% of daily adult smokers in Kansas started before the age of 25 and a half -- 54% -- started before the age of 18, said Prem