Smoking is one habit that can ruin your health. It destroys all of your body. It affects the lungs and cardiovascular system. Cigarettes make your teeth yellow and your breath stinky. The smell is not the only issue that tobacco causes. Smoking also causes wrinkles so people who smoke usually look much older than their peers. The chemicals that cigarettes are stuffed with cannot do any good to your body cells. Quit smoking as soon as possible. Seek professional help if you cannot do it on your own.