how bad is smoking cigarettes for you What chemicals are in a cigarette? | What does do to your body? WHY is smoking so bad

People who smoke sometimes have a cough

Countries that do not yet have pictorial warnings, such as the U.S., now have new evidence that should help their efforts to mandate pictorial warnings on all cigarette packs. Study limitations include: 1) not knowing what effects pictorial warnings may have over a longer period of time, and 2) participant self-selection possibly resulting in a study population with a greater interest in quitting smoking than the general population

Of special concern is fine particulate matter (PM2.5) airborne particles from engines and other emissions that are less than 0.033 the diameter of a human hair

Smoking is a major public health concern and the leading preventable cause of disease, death, and disability in the United States