Smoking tobacco is so harmful to the body that it changes a person's immune system, leaving them vulnerable to more disease and infection even years after they've quit, a new study found.Video above: ...

Like other factors such as age, sex and genetics, smoking has a major impact on immune responses, according to a new study. In addition to its short-term impact on immunity, smoking also has long-term ...

It's no secret that smoking is extremely detrimental to health. Tobacco smoke contains thousands of chemicals, including carcinogens, increasing the risk of cancer, cardiovascular and respiratory ...

Smoking cigarettes is like a chemical assault on nearly every system in the body. Tobacco smoke carries thousands of toxic compounds, dozens of which are proven cancer-causing agents. Globally, ...

What begins as a small experiment can easily turn into a habit — and that is where lasting damage usually begins. Quitting ...

(CNN) — Smoking tobacco is so harmful to the body that it changes a person’s immune system, leaving them vulnerable to more disease and infection even years after they’ve quit, a new study found.