If you want to learn about the MAOIs and WTAs then this has been a must-read for years...
Whole Tobacco Alkaloids
Well, I'll be $%^#! That was very informative. Particularly regarding IBS (much of which I already knew because, of course, I have IBS and GERD

I don't mean to make it sound as though vaping isn't enough. I quit cigarettes the first day of vaping with absolutely zero regrets. I rarely have any urges to smoke (only twice in 5 weeks), I was just wondering what the effects of smoking/quitting had on someone with a history of depression. This has been very informative. I was originally afraid to bring it up. I'm glad I did.