Why is cigarette smoking bad for me?

Everyone knows that smoking can cause cancer when you get older, but did you know that it also has bad effects on your body right now? A cigarette contains about 4000 chemicals, many of which are poisonous. Some of the worst ones are:

Nicotine: a deadly poison
Arsenic: used in rat poison
Methane: a component of rocket fuel
Ammonia: found in floor cleaner
Cadmium: used in batteries
Carbon Monoxide: part of car exhaust
Formaldehyde: used to preserve body tissue
Butane: lighter fluid
Hydrogen Cyanide: the poison used in gas chambers

Every time you inhale smoke from a cigarette, small amounts of these chemicals get into your blood through your lungs. They travel to all the parts of your body and cause harm.