e cigarette vs heated tobacco The Hidden Dangers: E-Cigarettes, Tobacco, and Their Impact on Oxidative Stress and Atherosclerosis—A Systematic Review and Narrative Synthesis of the Evidence Vaping vs Smoking vs IQOS:

The guts of the cigarette are poor in colour, which does not indicate the quality of the blend

Endocr Rev 38:267296

The consequences of inhaling second-hand tobacco smoke accumulate over time

[24] In late February 2020, a CDC-authored article in the NEJM stated that the VAPI outbreak was "driven by the use of THC-containing products from informal and illicit sources." [25] [24] However, the CDC also stated, "Evidence is not sufficient to rule out the contribution of other chemicals of concern, including chemicals in either THC or non-THC products, in some of the reported EVALI cases." [26] In 2021, analysis of the aerosols from popular vape brands such as Juul and Vuse found "nearly 2,000 chemicals, the vast majority of which are unidentified." [27] [28] The CDC has stated that the THC cutting agent vitamin E acetate is very strongly implicated in VAPI, [29] but evidence was not sufficient to rule out a contribution from other chemicals of concern to VAPI as of January 2020