effect of tobacco products alcohol and other harmful substances bsa Smoking harms not just your physical health, but your mental health too National Council on Substance Abuse:

Three years after the Surgeon General report, the tobacco company scientists data both confirms the link between smoking and lung cancer AND determines there is a minimum amount of nicotine that a person requires to become addicted

Regularly smoking cigars can increase the risk of cancers of the throat and mouth, including cancers of the esophagus, larynx (voice box), pharynx (throat), and oral cavity (lip, tongue, mouth)

A Nicotine-Focused Framework for Public Health

The fit test procedure requires about 15 to 20 minutes

Microplastics in the Human Body: Exposure, Detection, and Risk of Carcinogenesis: A State-of-the-Art Review