Even though e-cigarette emissions generally contain fewer distinct chemicals than conventional cigarette smoke, they are by no means safe, as the inhaled particles are predominantly ultrafine in size and can deposit deeply in the lungs (37), as illustrated in Figure 1, where ultrafine particles travel through the airways and accumulate in the distal alveolar regions
This is called tolerance, and it is when your body starts to become immune to the effects of small amounts of crack, so you have to up the dosage
However, these products can have side effects, including numbness, headaches, or digestive issues
Accessed 22 Sept 2021 Tuchman, A
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