Not everyone who smokes does so voluntarily. Environmental tobacco smoke causes heart disease and cancer. In 1992, the American Heart Association called environmental tobacco smoke “a major preventable cause of cardiovascular disease and death.” Experts estimate that 35,000 to 40,000 deaths each year from cardiovascular disease and another 3,000 to 5,000 deaths from lung cancer are directly related to exposure to environmental tobacco smoke.Knowing this, it is reasonable to insist on a smoke-free work site and to not allow guests to smoke in your home. When you are looking for daycare facilities for your children, choose one where they will not be exposed to tobacco smoke. Children who are raised in the homes of smokers are more likely to have ear and upper respiratory infections and other problems that require them to visit the doctor and miss school more often.The risk of secondhand (also called side-stream or passive) smoking increases as the exposure increases. There is no threshold below which there is no risk from environmental tobacco smoke.*233\252\8*