世界无烟日英语作文400字：smoking
smoking is harrnful to health. medical science has now proved that smoking cancause lung cancer and other diseases such as emphysema. your chances of having a heartattack also increase the more you smoke. smoking is dafinitely a health hazard.
getting rid of the smoking habit is not easy. many inveterate smokers are never able to quit completely. those who try to quit often experience depression, severe headaches, and sometimes get a lot of weight as they turn to food as a substitute.
