The long term effects are much, much worse. Smoking cigarettes causes several types of cancer. Smoking causes lung cancer, mouth cancer, throat cancer, stomach cancer, bladder cancer, cervical cancer and much more. Smoking causes lung disease, heart disease, cardiovascular disease, stroke, circulatory problems, premature aging, low sperm count and impotence, miscarriages, reduced lung function, infections and chronic obstructive pulmonary disease, and even death. There are no positive effects of smoking - it only harms you and everyone around you (American Heart Association and Centers for Disease Control and