2. Tobacco smoke contains over 4,000 different chemicals. At least 50 are known carcinogens (cause cancer in humans) and many are poisonous.

3. A colourless substance made up of coal and petroleum. Mostly found in fuel and in chemical manufacture. Its is a Known Carcinogogen and is linked with leukemia

4. Used as a flavouring, frees nicotine from tobacco turning it into a gas, found in dry cleaning fluids

5. Particulate matter drawn into lungs when you inhale on a lighted cigarette. Once inhaled, smoke condenses and about 70 per cent of the tar in the smoke is deposited in the smoker's lungs.

6.  An odourless, tasteless and poisonous gas, rapidly fatal in large amounts - it's the same gas that comes out of car exhausts and is the main gas in cigarette smoke, formed when the cigarette is lit. Others you may recognize are :

7. One of the most addictive substances known to man, a powerful and fast-acting medical and non-medical poison. This is the chemical which causes addiction.

8. Nicotine is one of the most addictive substances known to man. This is the chemical which causes addiction to cigarettes.  Effects of Nicotine  It is a drug and has many different effects on the body at the same time.  After just one puff it begins to act on your central nervous system, brain and other parts of the body.  Nicotine is viewed as a stress relief because nicotine makes a smoker feel good for a moment whilst under pressure  Nicotine stimulates area of the brain that give the feeling of relaxation  Over time as you continue to smoke, your body learns to depend on nicotine. As a result when you stop smoking you get 'nicotine cravings' one of many different nicotine withdrawal symptoms.

9.  Cravings and withdrawal symptoms when you quit smoking are a common experience.  It is the way your body reacts when it stops getting nicotine and all the other chemicals in tobacco smoke.  Not every smoker is affected to the same degree. Some will experience severe nicotine withdrawal symptoms but generally the symptoms will come and go over a period of a few days and most are gone within three weeks.  Cravings. Each one lasts 3 -5 minutes, and may be strong. Over time however, cravings will happen less often.

10.  Headaches  Indigestion  nausea  diarrhoea  Insomnia and an increased tendency to dream.  Coughing most commonly caused by the cilia that line your lungs cleaning out the tar and mucus.  Irritability, depression or anxiety are closely connected to the physical action of nicotine leaving your body and will lessen over one to three weeks.  Increased appetite and possible weight gain.