https://www.medicalnewstoday.com/articles/282929.php
#1 is heart disease
Causes: excessive alcohol consumption, smoking, no regular exercise, stress
I could be wrong but no exercise seems to be the main culprit based on what the disease actually is. Given that coffee increases your heart rate may suggest a causal link.
Edit: Link to the actual study from the article https://jamanetwork.com/journals/jamainternalmedicine/articl... the comments are worth a look.