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15 Years: Overall Mortality Risk Normalises Fifteen years after quitting smoking, your risk of coronary heart disease and overall mortality returns to nearly that of a lifelong non-smoker

Saliva drug tests are highly accurate and tough to cheat, but they mostly pick up only recent use, which can be a relief or a wake-up call, depending on your situation

Cannabis dependence is a pattern of cannabis use that leads to clinically significant impairment or distress and is characterized by a cluster of behavioral, cognitive, and physiological symptoms indicating that the individual continues use despite substance-related problems

Recent studies have focused on the neurobiological substrates that may mediate the aversive state associated with the discontinuation of morphine administration

Tobacco Questions for Surveys: A Subset of Key Questions from the Global Adults Tobacco Survey (GATS), 2nd Edition