Tobacco is the second major cause of preventable death in the world. Tobacco kills more than AIDS, legal drugs, illegal drugs, road accidents, murder, and suicide combined. It is currently responsible for approximately 5 million deaths each year. If current smoking patterns continue, it will cause some 10 million deaths each year by 2030. Half the people that smoke today -that is about 650 million people- will eventually be killed by tobacco.

It is estimated that tobacco causes 8.8 percent of deaths globally. That is the equivalent to roughly 5 million people per year or 13,500 per day. The World Health Organization estimates that someone dies from tobacco use every 6.5 seconds.
In recent years tobacco use has been declining in many countries in North America and Western Europe but increasing in many others, especially in Asia. Over 25 percent of the world’s smokers live in China. Over 300 million men in China — equal to the entire U.S. population - are smokers.

Breakdown products of tobacco smoke have been found in the human fetus. Children are particularly susceptible to the effects of passive smoking and are more likely to suffer from a variety of respiratory complaints. Research done by British Asthma Campaign has shown that babies whose mothers continue to smoke during pregnancy have almost a 50 percent increased risk of being wheezy or having breathing problems.Passive smoking has been found to be an independent risk factor foe a number of conditional and diseases in adults. These are Heart disease, Lung cancer, Stroke, Nasal cancer, Asthma Exacerbation, Reduced fertility, and Decreased lung function. There must be some effective rules and laws to secure non-smoking systems:

1. Employers should have a specific policy on smoking in the workplace.
2. Employers should take action to reduce the risk to the health and safety of their employees from second hand smoke to as low a level as is reasonably practicable.
3. Smoking policy should give priority to the needs of non-smokers who do not wish to breathe tobacco smoke.
4. Employers should consult their employees and their representatives on the appropriate smoking policy to suit their particular workplace.

To sum up, Restricting smoking in the workplace does not necessarily turn smokers into non-smokers, but it does increase the likelihood that smokers will try to quit, and that they will succeed.