Smoking
The frightening factor about the smoking practices is that around seventeen percentages of death in USA is caused due to the unhealthy smoking practices and moreover thirty percentage of cancer occurrence is due to smoking, more or less the statistical data is true in several other countries also. To be numerically exact these figures includes around three million people round the globe who are dying only because of smoking practices. The worst case scenario in this effect is that passive smokers who inhale the tobacco oriented products in the air are also subjected to cancer. It is proves that a non-smoker who lives with the smoker have greater risk of getting cancer when compared to the people who live with non-smokers. Smoking habits not only subject lung cancer but it is also responsible for the mouth cancer, pharynx, oesophageal, and bladder and kidney cancer. The problem is the carcinogens in the smoke which are inhaled affect the lungs which are then excreted through the kidney which is also being affected.