Even without nicotine, e- cigs can damage lungs

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E- cigarette liquids sweetened with flavorings like vanilla and cinnamon may harm the lungs even when they don’t contain nicotine, a U. S. study suggests.

Researchers examined what happened to monocytes, a type of white blood cell, upon exposure to flavoring chemicals used in popular e- cigarette liquids. None of the liquids contained nicotine, but the flavoring chemicals still appeared to increase biomarkers for inflammation and tissue damage, and many of them also caused cells to die.

Over time, this type of cell damage can lead to wide range of lung problems including fibrosis, chronic obstructive pulmonary disorder, and asthma, said senior study author Irfan Rahman, an environmental health researcher at the University of Rochester Medical Center in upstate New York.

“Nicotine- free e- liquids have generally been considered safe; however, the impact of flavoring chemicals,

Big U. S. tobacco companies are all developing e- cigarettes. The feature a glowing tip and a heating element that turns liquid nicotine and flavorings into a cloud of vapor that users inhale. especially on immune cells, has not been widely researched,” Rahman said by email. “This study shows that even though flavoring compounds are considered safe for ingestion, it is not safe for inhalation.”

Big U. S. tobacco companies are all developing ecigarettes. The batterypowered gadgets feature a glowing tip and a heating element that turns liquid nicotine and flavorings into a cloud of vapor that users inhale.

Even when e- liquids don’t contain nicotine, the lungs are still exposed to flavoring chemicals when the e- liquids are heated and the vapors are inhaled.