Cigarette smoking costs the U. S. more than $100 billion in health care costs annually. About 20% of all deaths each year are caused directly or indirectly by smoking or using tobacco. Cigarettes are addictive and the most addictive chemical in tobacco is Choose...soot nicotine carbon monoxide tar, however, hundreds of health-harming chemicals are present in cigarette smoke. A powdered form of tobacco that is just as addictive as cigarettes is Choose...chewing tobacco cigars pipe tobacco snuff . Use of all forms of smokeless tobacco can lead to cancers of the Choose...mouth lungs stomach prostate . Cigarette smoking increases the risk of cancer, heart disease, and respiratory diseases. The increased disease risk means that cigarette smoking decreases life expectancy by an average of Choose...571020 years. Lung cancer is the leading cause of death from cancer for both men and women. Each year, approximately Choose...100,000120,000140,000160,000 persons die from lung cancer and as many as 70-90 % of all lung cancer deaths are due to cigarette smoking. Chronic obstructive lung diseases such as bronchitis and Choose...stroke asthma emphysemacancer are also primarily caused by cigarette smoke. The health of nonsmokers is also compromised by second-hand smoke in the environment due to smokers. That is why many communities have banned cigarette smoking in public buildings, workplaces, and restaurants. Spouses who are nonsmokers but who live with smokers have about a Choose...10203050 percent greater risk of dying from cancer as compared with spouses who live with nonsmokers.