Pro and contra about smoking

Tobacco's role in increasing the chance of lung cancer is one of the most widely known of tobacco's harmful effects on human health.Tobacco smoking also causes Head and neck cancer, esophageal cancer and bladder cancer.
Harm to children
Smoking in pregnancy greatly increases the risk of miscarriage, is associated with lower birthweight babies, and inhibited child development.
Smoking by parents following the birth is linked to sudden infant death syndrome, or cot death, and higher rates of infant respiratory illness, such as bronchitis, colds, and pneumonia.
Nicotine, an ingredient of tobacco, is listed as an addictive substance by the US authorities.
Although the health risks of smoking are culmulative, giving up can yield health benefits regardless of the age of the patient, or the length of time they have been smoking.
Future impact
By 2020, the WHO expects the worldwide death toll to reach 10 million, causing 17.7% of all deaths in developed countries.
There are believed to be 1.1 billion smokers in the world, 800 million of them in developing countries.
Millions of people are engaged in sowing, transplanting, harvesting and curing of tobacco. Big companies are engaged in tobacco business and making huge profits. Governments are also getting revenue by way of excise duty.