is tobacco considered substance use Addiction: Nicotine and Other Factors, Animation Tobacco - Alcohol and Drug

It is a sporadic, brief exposure (between 15 minutes and one hour), but with concentrations six to 12 times higher than those that take place outdoors

There was no reason for this decision that I could see

Study after study after study has confirmed what the National Academies of Sciences, Engineering, and Medicine concluded in a massive report on the public health consequences of vaping: Substituting e-cigarettes for combustible tobacco cigarettes reduces users exposure to numerous toxicants and carcinogens present in combustible tobacco cigarettes. A significant body of evidence showing vaping is less harmful than smoking has not deterred those in the anti-nicotine space from their campaign against vaping

The transfer of Drugs and Other Chemicals Into Human Milk

In 2007, the first e-cigarette was introduced in the United States

Moreover, when the data from the rats exposed to regular cigarettes (which led to an anxiolytic effect) was included in the analyses, there was no correlation between any variable and the behavioural output, as expected [SOD (r = 0.04, p = 0.83), catalase (r = 0.16, p = 0.46), TBARS (r = 0.05, p = 0.9), or the number of neutrophils in the BALF (r = 0.39, p = 0.06)]