[code_duck]

I agree smoking could harm your heart in other ways. However all stimulants, including caffeine, pseudoephedrine, cocaine and amphetamines, constrict blood vessels that deliver blood to your heart, and nicotine is a stimulant with vasoconstrictive action. I’m not a medical professional but i’m sure this has been researched and reported on since it is where I got the notion.

[Houshalter]

As far as I know caffeine isn't associated with heart disease. AT least not in the brief googling I did.

[code_duck]

From what I can find, research has mixed results. Other things about coffee may mediate that effect (antioxidants). I would bet if you were smoking pure caffine, it would be less healthy for your heart than drinking coffee.