You've probably been hearing a lot lately about how e-cigarettes aren't as safe as you might have previously thought. While they may help people ease off smoking regular cigarettes, they do still contain nicotine and flavourings that may mess with how your heart functions. Now, a study has found that vaping could cause a host of other issues.
Published in the journal Proceedings of the National Academy of Sciences of the United States of America, researchers linked e-cigarette smoke to DNA damage in the lungs, bladders, and hearts of mice.
The mice were exposed to 10 milligrams per milliliter of e-cigarette smoke for three hours a day, five days a week for a total of 12 weeks. The amount of smoke the mice inhaled was as concentrated as the amount of smoke people inhale, according to The Guardian.
Although this was all done on mice, the researchers state in their study that their findings have implications for humans as well.
"We propose that [e-cigarette smoke], through damaging DNA and inhibiting DNA repair, might contribute to human lung and bladder cancer as well as to heart disease, although further studies are required to substantiate this proposal," they write.
Moon-shong Tang, Ph.D., professor of environmental medicine at New York University and one of the study's authors, told The Guardian that while they're beginning to work on long-term experiments to prove their theory, they probably won't have any answers in the near future.