Smokers who switch to e-cigarettes may breathe fewer toxins

Smokers who switch to e-cigarettes - even if it's only some of the time - may dramatically reduce their exposure to air pollutants including carbon monoxide and acrolein, a British study suggests.

Researchers gave e-cigarettes to 40 smokers who said they wanted to quit. After four weeks, the 16 participants using only e-cigarettes had about an 80 percent drop in exposure both to carbon monoxide and to acrolein, a harmful breakdown product that is also in some e-cigarettes' vapor.

The 17 participants who swapped some regular cigarettes for the electronic version had a 52 percent decline in carbon monoxide exposure and a 60 percent decline for acrolein, according to the study pub