sure, pack of cigs a day u can also become 100+ years old. don't forget about the impact on your mental processes and other effects these substances have on you though. they are arguably much worse than cutting off a few of your life years... i used to drink loads of coffee. now i only drink it on occasion, and really it's helped my attention become a lot more stable. caffeine and other substances have varying levels…
They aren't saying that drinking coffee doesn't have problems, all they are saying is that it doesn't appear to affect the arteries. They aren't trying to provide an anecdote about simple living, it's testing a hypothesis.