does tobacco have chemicals in Products and Your Health Mayo Clinic Q and A:

Such children are very slow at learning because their cognitive functions are impaired

Enzymes in your liver break most of the nicotine down into cotinine

Support in northern states for the American Civil War would have been dramatically different if northern farming also had relied upon slave labor

Very few customers are aware of the effects of nicotine, i.e., its addictive nature and that nicotine is a poison

Similarly, in another study, observations of increased biofilm formation of Staphylococcus aureus and human cell adherence in the presence of cigarette smoke (CS) indicate the role of bioactive effects of CS on resident microbiota in the pathogenesis of respiratory infection in CS-exposed humans [34]

[30] Soil degradation: Tobacco crops deplete soil nutrients more than many other crops, necessitating the heavy use of fertilizers