The heating mechanisms of vaping devices may have played a part in the e-cigarette, or vaping, product use associated lung injury (EVALI) crisis, new research suggests.
Initial theories on the August 2019 outbreak of EVALI in the US quickly linked the condition to the use of vitamin E acetate, a synthetic analogue (structurally similar compound) of naturally occurring vitamin E such as would be found in food.
Vitamin E acetate acted as a thinning or thickening agent in some THC vaping e-liquids – though not in mainstream nicotine e-liquids. But it is still unclear why exactly vitamin E acetate proved to be harmful when inhaled despite its being safe to ingest or use topically.