To many people tobacco smoking is a stimulant and a fashionable habit but scientific studies report that it has ill effects on the health of people.Tobacco contains the stimulant nicotine and if the nicotine in a single cigar is injected in a person it will prove fatal.
Nicotine when inhaled stimulates the nerve passages relaxes the muscle and helps pumping of more adrenalin into the blood stream.The heart beat rate goes up and blood pressure increases impairing the functioning of the heart.
When a pregnant woman smokes the foetus inside shows the stunted growth.Carbon monoxide in the tobacco smoke combines with haemoglobin of the blood and so intake of oxygen by haeomoglobin is reduced.Apart from causing cancer ,tobacco smoking can cause bronchitis,gastric and duodenal ulcers.
Tar,aldehydes,hydrogen cyanide and lead are toxic to health.People in the vicinity of smokers are passive smokers inhaling the smoke.
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