DANGERS OF SMOKING Cigarettes are cylinders of paper measuring between 70 and 120 mm long (vary by country) with a diameter of about 10 mm containing tobacco leaves that have been chopped. Cigarettes are burned at one end and allowed to burn so the smoke can be inhaled through the mouth at the other end. Cigarettes are usually sold in box-shaped packages or paper packages that can easily be put into a bag. Over the last few years, these packages have also generally been accompanied by health messages that warn smokers of the health hazards that can result from smoking, such as lung cancer or heart attacks (although in reality they are only ornamental, rarely adhered to). There has been a lot of research that proves that smoking is very addictive, in addition to causing many types of cancer, heart disease, respiratory diseases, digestive diseases, adverse effects on birth, and emphysema. This happened because cigarettes have harmful substances. First is Nicotine. This substance contains opium can cause someone addicted to smoke cigarettes. Influence the human body, causing addiction / dependence, damaging brain tissue causing blood to clot quickly, hardening artery walls. Secondly is Tar. The basic ingredients of asphalt that can stick to the lungs and can cause irritation and even cancer. kills cells in the blood vessels, increases mucus production in the lungs, Causes lung cancer) Carbon Monoxide. Gas that can cause heart disease because this gas can bind oxygen in the body. Binding hemoglobin, so that the body's lack of oxygen prevents transportation in the blood. Then there is Carcinogens. Trigger the growth of cancer cells in the body, and the last one is Irritant Substances. This substance littering the airways and air sacs in the lungs, causing coughing. These dangerous foreign substances are substances contained in cigarette smoke, and there are 4000 chemicals found in a cigarette, 40 of which are classified as dangerous substances. Humans in the world who smoke for the first time are Indians in America, for ritual purposes such as worshiping a god or spirit. In the 16th century, when Europeans discovered the American continent, some of the European explorers joined in trying to smoke cigarettes and then bring tobacco to Europe. Then smoking began to appear among European aristocrats. But unlike the Indians who smoke for ritual purposes, in Europe people smoke only for sheer pleasure. 17th Century