The tar gives the teeth a brown tint, while the nicotine, when combined with oxygen, causes yellowing
"Now that's not due, again, primarily to people quitting smoking, but rather taking that money [and] instead of paying tax on it, paying for illegal product that is going straight into the hands of organised crime." The tobacco industry commissioned research through FTI Consulting that shows illicit consumption made up almost a third of all tobacco consumed in 2023
A good example of pressure is the technique of pressure-fermentation which is used in making perique
This year, Indiana lawmakers stood up to Big Tobacco by boosting the taxes, said Allie Kast Gregg, government relations director for the American Cancer Society Cancer Action Network
But to your point, Deborah, on the vaping products
Compared with never-smokers, those who were current and past smokers had a higher incidence of stroke ( P for log-rank = .0001)