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