Introduction
Before answering the questions Brent has placed before us, I would like to digress to make certain the reader is on the same page. This allows obviation the reader may have through coming to understand the basic vocabulary of the fatty acids, etc... which is NOT necessarily a simple science.
Much begins with nomenclature ... as the science I speak of in my log on the HyperMass stack to medical and chemical vocabularies - fatty acid speak hinges on all of them. When we discuss "essential" fatty acids, this means that the fatty acids are NOT made by your bodies rendering the need to get them from some outside source - most notably food (not necessarily an easy task these days considering innumerous modifications to the term "natural") but also supplements (which too has its own slew of issues, all of which we can touch on here to aid answering the questions placed before us).
The two chief essential fatty acids are known as alpha-linolenic acid (LNA, for short) and linoleic acid (LA, knocking out the "N" for obvious reasons). You are likely more familiar with LNA being referenced as Omega-3's (W-3's) and LA being secured as Omega-6's (W-9's), but the story is a bit more complex, just keep that in mind. For now, however, making the terms synonymous in reference is ok for what I want to do with this discussion = any more would be beyond the scope (hehe, although Brent did kind of leave this one wide open).
OMEGA-3 CASCADE
LNA --> Stearidonic Acid (SDA) --> Eicosatetraenoic Acid --> Eicosapentanoic Acid (EPA) --> Clupanodonic Acid ↔ Docosahexaenoic Acid (DHA)
* Please Note that each arrow has either an enzyme known as an elongase of desaturase to aid its forward progression to various end-products, but knowledge of them is WELL beyond the scope of this discussion!
A couple key points in the LNA cascade are that EPA will give rise ultimately to series-3 prostaglandins offering rationale for proposed Mechanisms of Action, and DHA converts back to EPA at about 10-15% of its total product...yet also in and of itself has been rendered to have some beneficial indigenous effects of its own.
OMEGA-6 CASCADE
LA --> Gamma-linolenic Acid (GLA) --> Dihomogamma-linolenic Acid (DGLA) --> Arachidonic Acid (AA) --> Adrenic Acid --> Docosapentaenoic Acid (DPA)
* Please Note that each arrow has either an enzyme known as an elongase of desaturase to aid its forward progression to various end-products, but knowledge of them is again - WELL beyond the scope of this discussion!
A couple key points in the LA cascade are that DGLA will ultimately give rise to the series-1 prostaglandins; AA will ultimately give rise to the series-2 prostaglandins among other things like leukotrienes, which is what all the anti-AA people have as their arsenal as Series-2 prostaglandins + Leukotrienes are noted to produce some potentially deleterious consequence, however ... there could certainly be some respectable benefit to their use as well in the body composition domain...we have to simply keep some things in mind. Now, that we are all on the same nomenclature page, I would like to fast-forward in to progressive talks that may aid the discussion of Brent's questions.
Before answering the questions Brent has placed before us, I would like to digress to make certain the reader is on the same page. This allows obviation the reader may have through coming to understand the basic vocabulary of the fatty acids, etc... which is NOT necessarily a simple science.
Much begins with nomenclature ... as the science I speak of in my log on the HyperMass stack to medical and chemical vocabularies - fatty acid speak hinges on all of them. When we discuss "essential" fatty acids, this means that the fatty acids are NOT made by your bodies rendering the need to get them from some outside source - most notably food (not necessarily an easy task these days considering innumerous modifications to the term "natural") but also supplements (which too has its own slew of issues, all of which we can touch on here to aid answering the questions placed before us).
The two chief essential fatty acids are known as alpha-linolenic acid (LNA, for short) and linoleic acid (LA, knocking out the "N" for obvious reasons). You are likely more familiar with LNA being referenced as Omega-3's (W-3's) and LA being secured as Omega-6's (W-9's), but the story is a bit more complex, just keep that in mind. For now, however, making the terms synonymous in reference is ok for what I want to do with this discussion = any more would be beyond the scope (hehe, although Brent did kind of leave this one wide open).
OMEGA-3 CASCADE
LNA --> Stearidonic Acid (SDA) --> Eicosatetraenoic Acid --> Eicosapentanoic Acid (EPA) --> Clupanodonic Acid ↔ Docosahexaenoic Acid (DHA)
* Please Note that each arrow has either an enzyme known as an elongase of desaturase to aid its forward progression to various end-products, but knowledge of them is WELL beyond the scope of this discussion!
A couple key points in the LNA cascade are that EPA will give rise ultimately to series-3 prostaglandins offering rationale for proposed Mechanisms of Action, and DHA converts back to EPA at about 10-15% of its total product...yet also in and of itself has been rendered to have some beneficial indigenous effects of its own.
OMEGA-6 CASCADE
LA --> Gamma-linolenic Acid (GLA) --> Dihomogamma-linolenic Acid (DGLA) --> Arachidonic Acid (AA) --> Adrenic Acid --> Docosapentaenoic Acid (DPA)
* Please Note that each arrow has either an enzyme known as an elongase of desaturase to aid its forward progression to various end-products, but knowledge of them is again - WELL beyond the scope of this discussion!
A couple key points in the LA cascade are that DGLA will ultimately give rise to the series-1 prostaglandins; AA will ultimately give rise to the series-2 prostaglandins among other things like leukotrienes, which is what all the anti-AA people have as their arsenal as Series-2 prostaglandins + Leukotrienes are noted to produce some potentially deleterious consequence, however ... there could certainly be some respectable benefit to their use as well in the body composition domain...we have to simply keep some things in mind. Now, that we are all on the same nomenclature page, I would like to fast-forward in to progressive talks that may aid the discussion of Brent's questions.