Just to, hopefully, push this exploration of PUFAs along a bit,
here is a list of the Omega 9 PUFAs, according to Wikipedia.
It is a little confusing
because the general category of PUFA
includes Omega 3, Omega 6, and Omega 9.
But, of the Omega 9 PUFAs,
notice that all are monounsaturates
except for Mead Acid which is a polyunsaturate.
(So why are "monounsaturates" included within the category of "polyunsaturates"...?
Anyhow, here's the list:
Omega-9 fatty acids, mono- and polyunsaturated
Common name Lipid name Chemical name
Oleic acid† 18:1 (n-9) cis-9-octadecenoic acid
Eicosenoic acid† 20:1 (n-9) cis-11-eicosenoic acid
Mead acid 20:3 (n-9) all-cis-5,8,11-eicosatrienoic acid
Erucic acid† 22:1 (n-9) cis-13-docosenoic acid
Nervonic acid† 24:1 (n-9) cis-15-tetracosenoic acid
I have read Dr. Peat write positively about some of the Omega-9s:
I believe he has said that Oleic Acid is found in olive oil,
and has some positive, antioxidant properties.
And I think he has some good things to say about Mead Acid too,
though I can't remember what it was exactly.
But I also think I remember Peat saying that
we don't need to consume those Omega 9s (which are PUFAs too, presumably)
because we can make them ourselves
Here is a quote from his The Great Fish Oil Experiment
“The fats that we synthesize from sugar, or coconut oil, or oleic acid, the omega-9 series, are protective against the inflammatory PUFA, in some cases more effective even than vitamin E.”
So, we can make those Omega-9s ourselves from sugar, coconut oil, or oleic acid (in olive oil I believe).
We don't even have to eat any kind of oil to get our needed Omega-9s,
because we can make them from sugars.
As for the other Omega-9s on the list,
some would clearly seem to be bad.
For example, consider this excerpt (from Wiki) on Erucic acid:
Erucic acid has many of the same uses as mineral oils, but it is more readily biodegradable than some. It has limited ability to polymerize and dry for use in oil paints. Like other fatty acids, it can be converted into surfactants, lubricant and is a precursor to bio-diesel.
Derivatives of erucic acid have many further uses, such as behenyl alcohol (CH3(CH2)21OH), a pour point depressant (enabling liquids to flow at a lower temperature), and silver behenate, for use in photography. It is also used as an ingredient in appetite suppressants.
Whenever Peat refers to oils being good drying agents,
as in paint applications, he is usually trying to stress
how bad they are for human food consumption.
It seems pretty clear that
Dr. Peat means the Omega-3s, Omega-6s, and (most of the) Omega 9s.
That chart we have posted somewhere here
is a chart of only Omega-6 content.
Maybe chicken has a ton of Omega-3's and 9's...?
Maybe the chart is not accurate?
Maybe all of the PUFAs are concentrated in the chicken SKIN
and the chart is measuring only chicken MEAT?