Emergency rooms in communities with indoor smoking bans reported a 17 percent decrease in the number of children needing care for asthma attacks, according to new research from the University of Chicago Medicine.

A new study found that warning labels featuring photos of real smokers who were harmed by their habit are more effective in getting smokers to quit than the text-only labels currently in use.

A new study found that people aged 70 or older currently smoking were more than three times more likely to die than never-smokers, while former smokers were less likely to die the sooner they quit.

"Young children have little control over their exposure to household tobacco smoke, which is considered toxic to the brain at a time when its development is exponential."

Occasional smokers could avoid some of the harmful effects, according to a new report in The American Journal of Medicine. 

Helping scientists to better understand lung diseases.

Smoking reduced the life expectancy of people with HIV, who take medications, by about twice as much as HIV itself.

"This study of smoking tells us that looking in the DNA of cancers can provide provocative new clues to how cancers develop and thus, potentially, how they can be prevented."