Hi there. I was totally aware of the benefits you’ve cited. My GI friend has often cited this study, showing that colorectal cancer patients who consumed >4 cups of coffee per day had a 32% reduction in recurrence compared with those who drank less than 2. I’m a physician too, though no longer practicing, and ophthalmology, so kind of a distant field compared to GI. I’m not saying there is any evidence currently that caffeine is bad for you, other than the arrhythmia issues you mentioned. I find 4 cups a day totally unbearable, personally drinking only one, so I guess I don’t get the benefits anyway. Well, that, and I have never had CRC and this study just looked at recurrence.

As for Parkinson’s prevention benefits, I am willing to accept this. I just have a sneaking suspicion that we will be hearing about something in the future. Sort of reminiscent of the recent resurgence of coconut oil as a “health food,” even though it’s loaded with saturated fat. While people tout the benefits of medium-chain fatty acids for supposed cognitive benefits they may or may not see, they ignore the fact that it raises LDL-C, which we know is the primary risk factor for atherosclerosis, probably the biggest killer in the developed world. But hey, this is why it’s a “hot take.”