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Does eating grain cause n-6 PUFA storage?

Answered on August 19, 2014
Created September 02, 2013 at 12:05 PM

If livestock fed a grain based diet have more stored n-6 PUFA, I would imagine this might also apply to humans fed a high-grain diet.

Does anyone have any links to evidence for this?

Thanks

Medium avatar

(10611)

on September 02, 2013
at 04:04 PM

As for the second study, it looks like having breasts made from margarine has a bad downside risk.

Medium avatar

(10611)

on September 02, 2013
at 04:00 PM

Mammals don't produce PUFAs to any great degree, so the stored fat we generate is mostly sat and MUFA. The PUFA has to come from dietary sources, so if you're not storing the fat that you're making you'd expect any accumulations to come from what you eat. Eat butter you become butter, eat margarine you become margarine. That's how I interpret the first study.

Medium avatar

(10611)

on September 02, 2013
at 03:37 PM

Seems like the most likely event. If there's unsat fat in a sedentary overeating diet, that's what will show up in the adipose, along with the sat fat the animals make themselves.

Bfddc0ab925c8ea0e0c2e87198514907

on September 02, 2013
at 03:36 PM

Interesting. The first study leaves me somewhat baffled, although I think I read something somewhere about the body trying to use the unsaturated fat and hang on to the saturated. Might be a load of rubbish though, I'll have to see if I can find it...

Bfddc0ab925c8ea0e0c2e87198514907

on September 02, 2013
at 03:33 PM

Of course. Thanks

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2 Answers

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32f5749fa6cf7adbeb0b0b031ba82b46

(41757)

on September 02, 2013
at 12:47 PM

Grain is high in omega-6s, it's not that it is promoting omega-6 storage. And it's more of a lack of omega-3s in the diet that causes low omega-3s. CAFO cows, pigs and chickens don't eat grass, so they don't get a lot of dietary omega-3s.

Medium avatar

(10611)

on September 02, 2013
at 03:37 PM

Seems like the most likely event. If there's unsat fat in a sedentary overeating diet, that's what will show up in the adipose, along with the sat fat the animals make themselves.

Bfddc0ab925c8ea0e0c2e87198514907

on September 02, 2013
at 03:33 PM

Of course. Thanks

1
Medium avatar

(10611)

on September 02, 2013
at 12:46 PM

Who knows. This study is as far as I got, and maybe it will help some.

http://www.ncbi.nlm.nih.gov/pubmed/22972698

Among these subjects, the greater the amount of fat deposited the less unsaturated fat in the deposits. This doesn't implicate grain at all, but does imply that the fat deposits in leaner people would be expected to contain a higher % of O6, or O3, depending on which they were eating.

This might get a little closer, because it more directly addresses the deposition of PUFA by type in mammary fat, and the negative effect of O6 in breast cancer.

http://www.ncbi.nlm.nih.gov/pubmed/12416257

It doesn't include evidence for grain promoting O6 deposition though.

Bfddc0ab925c8ea0e0c2e87198514907

on September 02, 2013
at 03:36 PM

Interesting. The first study leaves me somewhat baffled, although I think I read something somewhere about the body trying to use the unsaturated fat and hang on to the saturated. Might be a load of rubbish though, I'll have to see if I can find it...

Medium avatar

(10611)

on September 02, 2013
at 04:00 PM

Mammals don't produce PUFAs to any great degree, so the stored fat we generate is mostly sat and MUFA. The PUFA has to come from dietary sources, so if you're not storing the fat that you're making you'd expect any accumulations to come from what you eat. Eat butter you become butter, eat margarine you become margarine. That's how I interpret the first study.

Medium avatar

(10611)

on September 02, 2013
at 04:04 PM

As for the second study, it looks like having breasts made from margarine has a bad downside risk.

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