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While its true that the more a person smokes, the higher the cotinine level is likely to be, a number of contributing factors influence testing outcomes such as: Size of the individual Percentage of body fat present Rate of metabolism Hydration state of the individual Type of cigarette/cigar/pipe smoked or tobacco chewed Smoking style Elapsed time from smoking to testing The pH of the urine (if urine testing is conducted) 5

A major study found that in cities where high-THC cannabis is widely available, up to 30 percent of new psychosis cases were linked to cannabis use [3]

Detox From Nicotine With This Expert Series Expert Q&A QuestionDo vapes contain a lot of nicotine?Lauren Urban, LCSWLauren Urban is a licensed psychotherapist and the owner of Psychobabble Therapy based in Brooklyn, New York

However, we do know that the smoking habits of cigarette users and weed users are different, which may impact risk: Because weeds effects last longer than cigarettes, people may smoke it less often