tyw
Member
But even eating coconut oil and grass fed butter still gives you pufa that builds up. Pufa depletion is impossible, unless you own a laboratory and pay someone to remove it from your food.
Ray Peat on the myth of PUFA depletion and making our own fats
Total Sidenote: Copha here in Australia is hydrogenated coconut oil ... but contains soy lecithin ...
Anyway, if we're talking about near zero levels of PUFA in the body, that's definitely not possible, and we need some level of PUFA.
The real question is whether or not organisms should rely on dietary PUFA to get the required amount of PUFA, or rely on endogenous synthesis and endogenous regulatory pathways to determine the required amount of PUFA.
NOTE: the "required amount" is going to vary by organism. Clearly, a hibernating bear needs much more PUFA than an active human. If the bear didn't have that PUFA, they couldn't slow their metabolic rate down to the levels required to survive a winter.
The Bear would need to eat additional dietary PUFA to survive the winter.
The Bear would need to eat additional dietary PUFA to survive the winter.
Peat would then likely argue that the amounts of PUFA in dietary sources is almost always in excess of the required amount for healthy human function.
The corollary is that most standard diets lead to an excess of accumulation of PUFA.
The term "PUFA depletion" then refers to any set of actions with leads to the minimisation of PUFA to the least amounts that the body "decides is required" (which could be variable depending on many factors).
We should then think of dietary PUFA as being part of PUFA flux -- PUFAs can and will get used and accumulated at various rates, and it is the contention of this community that PUFA dietary inputs should be minimised as far as possible.
Sidenote: I have a hunch that other nutrients in eggs, like the Vitamin E, allow for better discrimination in PUFA use. I am still not 100% clear on these mechanics, but did hint in my previous blog post that I'm looking into it wrt Birds, Bats, and Naked Mole Rats.
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