I have very serious data for you all people who give no attention to the message "cigarette smoking is injurious to health", Cigarettes has nearly 4000 chemicals that produce more than 400 harmful substance that is sufficient to destroy you lung and other par of body. Cigarette when burns at 700C at the tip and around 60C in the core, it breaks down the tobacco to various toxins. Some of the products that are most damaging are:tar, a carcinogen (substance that causes cancer)nicotineis addictive and increases cholesterol levels in your bodycarbon monoxidereduces oxygen in the bodycomponents of the gas and particulate phases causechronic obstructive pulmonary disorder (COPD).