A prospective study from China of 374 individuals with schizophrenia revealed that smoking was independently associated with more frequent hospital admissions, more severe negative symptoms and deterioration of thought disorder over 12 years (Wang Reference Wang, Xiang and Weng2010)
Also, the machine learning sensors and tracking IDs make it easier to track cannabis products from seed to sale
Measurements and epidemiological studies over the last 50 years have improved our understanding of the health impacts of tobacco
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"I did (chewing tobacco) for about 30 years
Although age was adjusted for categorically, residual confounding by age remains possible given the strength of the agehypertension association