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Description
Nicotine leaves the body in a few hours, but cotinine has a longer half-life, and is usually present for up to a week

In this century, it is estimated that the Chesapeake African slave population increased from 100,000 to 1 million a majority of the enslaved workforce and about 40% of the total population
PMC 6528808
Exploring Alcohols Effects on Liver Function

Nicotine restricts blood flow to the placenta, depriving the fetus of oxygen and nutrients