[anders_p]

Oh, I had no idea about the ADHD/nicotine connection.

As a recently diagnosed & medicated ADHD person, who used to chain smoke and drink gallons of coffee daily, so much makes sense all of a sudden.

Thank you for making me aware of this!

[DoreenMichele]

FYI: Consumption of caffeine increases tolerance for nicotine. Drinking coffee and smoking will tend to lead to more smoking.

Not to dismiss the ADHD connection at all, but I would be hesitant to hang too much of the blame on that given the coffee drinking.

[eru]

See https://www.gwern.net/Nicotine for more.