4

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Why is it recommended to not eat fat with fructose?

Answered on August 19, 2014
Created June 12, 2011 at 11:26 PM

Ive read a few times on here that it is best to not eat fat when you consume fructose (or maybe it was sugar/carbs in general)? whats so crucial about the timing? thanks!

1d9af5db8833413037be3ac48964714f

(3789)

on June 13, 2011
at 06:40 PM

Sorry. Should have read more carefully.

00c8eb3f6e6a1884216044ca29cf868a

on June 13, 2011
at 08:06 AM

Meghan is right: my article isn't about the fructose issue. It's more about consuming complete protein with carbs in general. (Though I appreciate the link from David!)

06325b762f78a2b8aaa977161cca4a1f

(539)

on June 13, 2011
at 04:11 AM

PS.. Im having some problems with double accounts... When I get it figured out, I'll mark your answer as correct.

06325b762f78a2b8aaa977161cca4a1f

(539)

on June 13, 2011
at 04:10 AM

Thanks, this is what I was looking for. Specifically: "liver tackles the more pressing business of processing the toxins". One more thing: The article David mentions says that it's good to eat protein with the carbs (not necessarily fructose). Would you disagree on the same premise that you don't want to overwork the liver when it already has the task of processing the fructose (or just carbs in general)? Thanks again for your answer, and I promise I'm done after this!

06325b762f78a2b8aaa977161cca4a1f

(539)

on June 13, 2011
at 03:51 AM

This seemed to focus more on consuming protein with carbs, not fat with carbs. Is it the same premise? I've seen a few times on PaleoHacks recommendations to NOT eat fat with carbs 'as it can cause weight gain'. Maybe they were suggesting it was just the carbs in general that would cause weight gain, not necessarily its combination with fat. Nonetheless, I feel that since I've seen this recommendation more than once, there must at least be some thought (valid or not) behind it.

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4 Answers

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on June 13, 2011
at 03:58 AM

Better advice would be to not eat fructose at any time as chronic exposure leads to elevated insulin levels in general, which would inhibit lipolysis. Fructose, like alcohol, needs to be processed by the liver, so fat digestion would be temporarily interfered with while the liver tackles the more pressing business of processing the toxins.

People do recommend that starch not be eaten with fat because of a temporary insulin spike associated with it, but I don't believe that intrameal insulin levels are all that important. What matters is your daily, weekly etc. insulin area under the curve. If you eat a bunch of fructose and become insulin resistant and have chronically elevated insulin as a result, your adipocytes will become one-way streets. The fat from a high fat meal will largely be stored in your fat cells, whether you eat it with carbs or not. There's simply no other place for it to go.

Rather than focus on meal composition, we should take steps to prevent insulin resistance, such as a highly reduced fructose intake alongside exercise, especially resistance training. These keep our insulin levels in a healthy range and allow lipolysis to occur all day long.

06325b762f78a2b8aaa977161cca4a1f

(539)

on June 13, 2011
at 04:11 AM

PS.. Im having some problems with double accounts... When I get it figured out, I'll mark your answer as correct.

06325b762f78a2b8aaa977161cca4a1f

(539)

on June 13, 2011
at 04:10 AM

Thanks, this is what I was looking for. Specifically: "liver tackles the more pressing business of processing the toxins". One more thing: The article David mentions says that it's good to eat protein with the carbs (not necessarily fructose). Would you disagree on the same premise that you don't want to overwork the liver when it already has the task of processing the fructose (or just carbs in general)? Thanks again for your answer, and I promise I'm done after this!

2
Af1d286f0fd5c3949f59b4edf4d892f5

(18452)

on June 13, 2011
at 02:57 PM

Yah I think J Stanton Gnolls is correct about getting mixed up with the fructose/pufa theory.

I remember Stephan Aegis asked a question on PH about this and AGEs. I'm really not convinced that eating a reasonable amount of fructose from whole foods combined with anything is a real problem. I think eating an unreasonable amount of fructose with or without anything is bad either way.

Here's where I think we go wrong. We see that eating corn oil and hfcs together causes these issues, then associate that with a banana and pecans. I really don't think it's fair to not consider the complete package that the whole foods come with. Treating them as isolated nutrients is probably not the best idea.

Personally, I eat raw honey with sprouted nut butter. That's fructose and a bit of pufa, although not much. I also eat a sliced banana and blueberries with heavy cream. That's fructose and fat. But do I eat a basket of corn oil soaked corn chips with a big gulp dr pepper? no. Would I eat 2 handfuls of peanuts roasted in cottonseed oil and then chase it with 16oz apple juice? surely no.

I also believe that if you are eating a densely nutritional diet of whole foods with pure ingredients, you will be a bit more impervious to small amount of these types of food combination ideas like this that may have been shown to affect other people that continue to participate in a poor eating program.

2
00c8eb3f6e6a1884216044ca29cf868a

on June 13, 2011
at 08:23 AM

Amongst the issues of fructose is that it's substantially more reactive in vivo (i.e. in your bloodstream) than glucose. (I see many different numbers quoted, but it's not an absolute value: it depends on pH, among other things.)

I believe the theory to which you refer (advanced by the Jaminets of Perfect Health Diet fame, and perhaps others) is that it's bad to consume fructose at the same time as PUFAs, which are less stable than MUFA or SFA due to the many double bonds, because it leads to glycation of the PUFA. The theory also states that it's bad to consume fructose at the same time as protein, for the same reason (glycation of protens).

The Jaminets recommend consuming fructose in limited quantities, only as part of whole fruits, and consuming them only with saturated fats, i.e. butter, heavy cream, coconut products, etc.

0
1d9af5db8833413037be3ac48964714f

on June 13, 2011
at 12:58 AM

00c8eb3f6e6a1884216044ca29cf868a

on June 13, 2011
at 08:06 AM

Meghan is right: my article isn't about the fructose issue. It's more about consuming complete protein with carbs in general. (Though I appreciate the link from David!)

06325b762f78a2b8aaa977161cca4a1f

(539)

on June 13, 2011
at 03:51 AM

This seemed to focus more on consuming protein with carbs, not fat with carbs. Is it the same premise? I've seen a few times on PaleoHacks recommendations to NOT eat fat with carbs 'as it can cause weight gain'. Maybe they were suggesting it was just the carbs in general that would cause weight gain, not necessarily its combination with fat. Nonetheless, I feel that since I've seen this recommendation more than once, there must at least be some thought (valid or not) behind it.

1d9af5db8833413037be3ac48964714f

(3789)

on June 13, 2011
at 06:40 PM

Sorry. Should have read more carefully.

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