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by DrThunder 1106 days ago
Here's a start - feel free to go off on your own and learn.

https://www.hopkinsmedicine.org/health/wellness-and-preventi...

"What’s worse, says Blaha, many e-cigarette users get even more nicotine than they would from a combustible tobacco product: Users can buy extra-strength cartridges, which have a higher concentration of nicotine, or increase the e-cigarette’s voltage to get a greater hit of the substance."