Hi beloved friends! Today I am going to discuss about the smoking in which many people are involved in it. Today most of the people have a habit of smoking and drinking at first they start this habit for just for fun and for relaxation later on they become addict to it which is not good for their health. Some of habits which are not of any advantage have now proved to be harmful. The best examples are smoking and chewing of tobacco, and excessive alcohol drinking. Smoking is a habit commonly indulged in, but it is proved to be definitely harmful to health. Excessive smoking has been shown to be a causative factor in disease, etc. Smoking also causes irritation of the respiratory passage. Smokers not only have poor health but have also a shorter life on account of the disease mentioned above. Tobacco chewing is similarly a harmful habit as this is show to be the commonest cause of cancer of the mouth. Alcoholism is a social, moral and economic disaster, and also has a profound effect on health. It may lead to mental depression, chronic gastric complaints, degeneration of the tissue of the heart and arteries, and death due to liver failure. The evidence against these harmful habits is so clear that one should not be hesitant in giving them up.