PUFA’s in focus again. This is a Sunday email…
I rarely pay attention to anything “from the desk of…”; however, Mr Mangan has ideas which resonate, so here ya go: note the referenced study at the end
P. D. Mangan firstname.lastname@example.org via n.convertkit.com
A few weeks back I wrote about insulin resistance, metabolic syndrome, and coronary artery disease.
What causes metabolic syndrome, anyway? It seems clear that food is involved, but which types of food remain an open question.
Some say sugar is the reason, since the fructose in sugar is handled by the liver only, in contrast to other forms of carbohydrate.
Some say carbohydrates in general.
Then, of course, there are seed oils, which contain high amounts of omega-6 fatty acids.
Obviously, all of them could play a role, alone or in combination.
A recent study looked at obese adolescents; they were put on a diet with a low ratio of omega-6 to omega-3 fatty acids, the latter being the type most abundant in fish.[i]
The diet was designed so that the subjects didn’t lose weight, since weight loss caused by a diet is a confounding factor – was it the food, or the weight loss, that produced the results?
After 12 weeks, liver fat dropped by 26%, and liver enzymes also declined, as did insulin resistance.
Fatty liver is closely associated with metabolic syndrome, and is a serious illness.
This result implicates a high dietary omega-6 content in fatty liver and insulin resistance.
Most of our omega-6 comes from seed oils, like corn, soybean, safflower, canola, and other similar oils. (Not olive oil, which comes from a fruit.)
Unfortunately, even if you don’t use seed oils for cooking or dressings yourself, it’s in almost all processed foods, and restaurant foods.
Even high-end restaurants cook with them.
The massive consumption of seed oils leads to a lopsided omega-6/3 ratio.
Whereas our long-ago ancestors ate food that gave them a ratio of perhaps 1 or 2:1, in the present-day developed world, the ratio is 15:1 and up.
That leads to obesity and ill health, including fatty liver and metabolic syndrome, as this paper provides evidence for.
Seed oils should definitely be avoided.
And it appears that if you did nothing else but avoid seed oils, you would do yourself a world of good.
Of course, to avoid them entirely, you’d be eating only whole, minimally processed foods, and eating those does you a world of good too.
What else can help you get metabolically healthy?
That’s right, resistance training.
So do yourself a favor, get moving this week!
Happy Sunday + Have a great week,