The health problems of Smoking

The cons of smoking are primarily the health problems they bring. Smoking can cause lung cancer, heart diseases, bronchitis, and etc. Cigarettes contain 400 toxic substances and the most damaging of them are: tar which cause you lung cancer, nicotine that will increase your cholesterol level and cause you addiction to cigarettes and carbon monoxide which reduces the oxygen levels of your body. Smoking can reduce your life expectancy by 8 or 7 years and on average each cigarette you smoke shortens your life by about 11 minutes.