Figure 12.2 How many standard drinks are you drinking?
Figure 12.4 The effects of alcohol abuse on the body
Alcohol has a major effect on the brain, damaging brain cells, impairing judgment and perceptions, and often leading to accidents and altercations. Alcohol also damages the digestive system, especially the liver.
Figure 12.5 The immediate effects of nicotine on the body
The primary active ingredient is nicotine, a fast-acting and potent drug.
Figure 12.6 Some effects of smoking on the body
Smoking harms the respiratory system and the cardiorespiratory system. The leading cause of death for smokers is heart attack.