why is cigarette toxic
Cigarette smoke is a mixture of over 4000 chemicals, many of which are harmful to the human body. All currently available tobacco products that are smoked deliver substantial amounts of toxic chemicals to their users and those who breathe their smoke. Cigarette smoke is a combination of: Of the more than 4000 chemicals present in cigarette smoke, more than 60 have been identified as cancer causing chemicals, 11 of which are known to cause cancer in humans and 8 that probably cause cancer in humans. Cancer causing chemicals in tobacco smoke include: Toxic chemicals in tobacco smoke include: