Are you changing your long term fasting length after listening to the Phinney interview?


(PJ) #21

Adipose cells vary a little depending on type, but last I read, their official life span is eight years. However, the life span of the content within them has a half-life of two years. So there is more to the question than merely the overall cell.

I consider fasting studies the only comparison for actual fasting. One thing that the research does seem like it makes clear is that there is a difference between under-eating (resulting in making one a ‘competitive eater’ and ‘competitive survivor on minimal calories by reducing metabolism’) and not-eating (resulting in making one a ‘competitive hunter’ and ‘competitive survivor on no calories by increasing metabolism so you can hunt for more, or you’re screwed’).

So for example, while the results of Keyes’ studies on this are fascinating, I consider it an excellent example of what happens when people are anorexic or diet (in today’s world) – not a good comparison for people who do short term fasting.

PJ


(PJ) #22

Here are a couple of PDFs (just for locals) some may find interesting on the topic.

A summary ~15 years ago from Cahill

Physiological adaptation to prolonged starvation - refs Cahill, has neat visuals :slight_smile:

297122878-Fuel-Metabolism-in-Starvation.pdf (536.6 KB)
derangedphysiology.com-Physiological adaptation to prolonged starvation.pdf (873.3 KB)


(Old Baconian) #23

True, and even Phinney doesn’t really disapprove of a fast that lasts only two or three days. And remember, past 2-3 days, even Fung wants you to have medical supervision.