Health Sciences 1001A/B Chapter Notes - Chapter 16: Sidestream Smoke, Passive Smoking, Psychoactive Drug
Health science lecture: chapter 16: tobacco use. Smoking is the most preventable cause of disease and premature death in canada. Every cigarette a person smokes reduces life expectancy by ~ 11 minutes. More than 37,000 people die prematurely each year in canada due to tobacco use. Tobacco use is widespread in our society. An addiction involving physical dependence on the psychoactive drug nicotine. Nicotine is a poisonous, addictive substance found in tobacco and is responsible for many of the effects of tobacco. Addicted users must keep a steady amount of nicotine in the blood and going to the brain. If that amount decreases, they experience withdrawal symptoms. Nicotine addiction can start within a few days of smoking and after just a few cigarettes. There are negative effects on nearly every organ of the body and greatly decreases overall health. Related to more than two dozen diseases and conditions.