Cigarettes are the leading cause of preventable deaths in this country. Tobacco is toxic to your body. The nicotine in cigarettes increases your risk of heart disease. The tars and other toxic substances in tobacco can cause cancer of the lung and other organs.
Tars also damage the lungs, leading to serious breathing problems.
Cigarette smoke contains carbon monoxide and other chemicals, such as DDT, arsenic and formaldehyde. All of these chemicals are bad for your body. That's why stopping smoking now is so important. It seems hard to stop smoking because smoking causes changes in your body and in the way you act. The changes in your body are caused by addiction to nicotine.