Smoking is bad for your health: It can cause lung cancer, emphysema and heart disease, among other health problems. That's not news. What is news, is that smoking contributes to a host of other diseases, as well: cataracts, acute myeloid leukemia and cancers of the cervix, kidney, pancreas and stomach, according to the U.S. Surgeon General. Smoking kills about 440,000 Americans each year.