A study of 410,000 adults finds current smokers have a lower Parkinson’s risk, while quitters have a higher Parkinson's risk but a much lower risk of death.

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: ...

Add Yahoo as a preferred source to see more of our stories on Google. Notice your blood pressure has been creeping up lately? Smoking not only harms your lungs, but it also causes spikes in blood ...