system
Given the following post, respond as if you're commenting on Reddit:
human
[ELI5] Is nicotine inherently bad?

I know it’s addictive, but is it the nicotine that is unhealthy or all of the other substances involved? For example, when smoking a cigarette is it the nicotine that is bad or just the process of inhaling smoke.. same with vapes, I know the chemical carrier is full of unhealthy things. 

My boyfriend likes to use nicotine pouches instead of chew.. does this lead to the same sort of outcomes as chew?
gpt
Nicotine does have a list of known risks. Largely heart and blood related. Stroke, heart attack, blood pressure. Stuff like that. You're right, though, that the most commonly-considered risks come from the process of consumption and not the drug itself.