In May 2015, the official Kyodo news agency reported on a health ministry research group which said that four of the nine e-cigarette brands that can currently be legally sold in Japan (because they do not dispense or contain nicotine) produce vapor with high levels of formaldehyde, a known carcinogen
A public letter had also been sent to Juul, requesting every internal document pertaining to the companys marketing strategy, product design, and health, toxicological, behavioral, and physiologic effects, including appeal or addictive potential for youth. The agencys statement mentioned other brands, too, such as KandyPens, whose Instagram account is full of vaguely pornographic soft-focus images of hot girls hitting the vape
At the center of this marketing quandary was the cigarette
SDMs were smaller than 0.01 and variance ratios were 1 for all covariates that are used in matching