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Interesting! Do you have some studies or references at hand for this?

Never heard of "human brain needs nicotine" before...

Maybe what he’s referring to is the effects nicotine has on people with ADHD and ASD. It’s sort of a self-medication.

There’s more you can find, too. Really interesting stuff. Unfortunate that nicotine is both incredibly harmful and incredibly addictive.

Nicotine itself isn't really harmful, though.

It is, unfortunately. Over time it leads to cardiovascular damage.