About 80-90 percent of cases of lung cancer caused by smoking habit. The active smokers into groups that are most at risk. Smoke smoked, contains over 60 toxic substances that can trigger the development of cancer. These toxic substances as carcinogenic. For example, nicotine used in insecticides and tar that is used in the manufacture of asphalt streets.
At first, this damage can be repaired by the body. But repetition and sustainability of smoking causes damage to lung tissue continues to grow. This resulted in damage to the cells react abnormally to finally appeared the cancer cells.
Currently, more than 60 million inhabitants of Indonesia are active smokers. This number continues to grow from year to year. Indonesia was in third place in the countries with the highest active smokers, behind China and India.
In addition to tobacco, cannabis also contains substances that can trigger cancer. Tobacco is often laced with marijuana. Although the quantity of tobacco mixed with marijuana less compared to smoking, cannabis smokers suck deeper and longer. The impact of sucking tobacco mixed with marijuana is much worse than a regular tobacco cigarette.
Passive smokers are those who are exposed to cigarette smoke exposure but do not smoke directly. Though not smoke directly, passive smokers remain at risk of developing cancer of the lungs. Passive smokers are exposed to the risk of lung cancer increased by at least 20 percent compared to people who are not exposed to cigarette smoke exposure.
According to the WHO data, Southeast Asia was in second place as contributors to poor air pollution in the world. The risk of developing lung cancer will increase if we are exposed to air pollution exposure for example smoke from vehicles or smoke factory. About one out of 100 deaths due to lung cancer due to high pollution levels. Smoke inhalation or from the vehicle manufacturer‘s disposal could have the same impact as passive smoking.
Exposure in the workplace
Some work has the possibility to be associated with increased risk of developing lung cancer. Employees affected by exposure to some chemical compounds are carcinogenic, such as asbestos, nickel, coal, silica, and arsenic have a higher risk for suffering from lung cancer.