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Greg Marcus
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Aug 21, 2026
Health Wanted - Episode 302 - Podcast Mix
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29:10
Laurel BristowHOST
So what's your suspicion about the mechanism of action that makes caffeinated coffee beneficial when it comes to atrial fibrillation?

Greg MarcusGUEST
Yeah, so this points to an observation that we as heart rhythm disorder specialists know but may not be, uh, obvious to most, is that even in this very small, narrow sub-subspecialty of cardiology focused on heart rhythm disorders, those disorders themselves are very different from one another.

Greg MarcusGUEST
So there are many mechanisms that are biologically plausible that ex- could explain why caffeinated coffee would reduce quite specifically this very common problem, atrial fibrillation.

Greg MarcusGUEST
So number one, oftentimes people with this disorder, they, the trigger is not adrenaline or exercise, but tends to be more the opposite, where there is more what we call vagal tone, where the parasympathetic part of what we call the autonomic nervous system, this is the part of the autonomic nervous system that is constantly in tension or in harmony, uh, with the adrenaline or sympathetic side.

Greg MarcusGUEST
I even have some patients that say they can break out of the AFib by running up a hill or doing pushups.
Laurel BristowHOST
Aside from atrial fibrillation, what's the downside to caffeine? 'Cause I feel like that is constantly being pushed.
How a 90-Year-Old Movie Theater Company Keeps Turning Disruption Into Reinvention – Greg Marcus, President & CEO of The Marcus Corporation
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S
19:56speaker_0NARRATOR
pandemic.

Greg MarcusGUEST
And we had to take on more debt to get through it, which we actually subsequently retired.
11 MINS LATER
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31:09speaker_0NARRATOR
who I am?
MINECRAFT Ignites the Box Office | CinemaCon Debrief with Greg Marcus [Brought to you by Arts Alliance Media]
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Greg MarcusGUEST
I mean, viable, I'm glad you used the right word because we want our industry to be viable.

Greg MarcusGUEST
We are seeing that if you look at the top 10 film, and if you use the model by one studio that basically says that anything under the top 10, anything under $50 million is subject to a 17-day window on a PVOD.
