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But smokers dump so much toxic stuff in that the lungs cant keep up. Adding illegal drugs to the mix such as marijuana or crack cocaine can exacerbate the problem, although experts arent sure if either directly causes emphysema

Weve been there

although I don't actually know which fuse it is to be honest

Ketamine has been shown to protect against CO poisoning in rats, due to inhibition of the NMDA receptor, which blocks glutamate excitotoxicity

Calculation of absolute increase lifetime risk of cancer due to ten units of alcohol or ten cigarettes per week in non-smokers and non-drinkers respectively following a sensitivity analysis

Gastroenterology 157 , 647-659.e4