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Fruit and meat at the same time?

by 681 · April 06, 2013 at 02:48 AM

Some people say that eating fruit and meat (or any other high protein food) in the same meal is a bad idea. Is there any truth to this?

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10 Replies

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6849 · April 06, 2012 at 06:00 AM

I eat meat with fruit all the time because, well, it's delicious.

The reason I've heard against eating fruit and meat together is that fruit contains vitamin c which can increase iron absorption.

But then I thought about it... and a pepper has something like two or three times the amount of vitamin c as an orange, but how many people say you shouldn't eat meat and a pepper together? It's one of the most common pairings.

So, I'm over it, and I'll go enjoy my delicious pork and apples.

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1807 · April 06, 2012 at 07:25 AM

Vitamin C increases iron absorption at the duodenal brush border, but I'm confused why this would be a detriment. It would seem beneficial to nearly anyone, really, and crucial to anyone at risk for anemia.

If the worry is oxidative stress, then yes, it oxidizes ferric and cupric substances to ferrous and cuprous states. But it does far more good than potential damage, and it's a far better anti-oxidant than pro-, and studies show no adverse effect even from IV injection at therapeutic levels.

One could argue that the temporary glucose spike from the fruit might blunt the metabolic pathways that would break down the protein in the meat; but I just don't think that will matter if you're fat-adapted. The interaction of those pathways is intricate, but its momentum is eminently alterable.

I can't think of any other reasons. Anyone ever had a problem with eating meat and fruit together? I haven't.

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77342 · April 06, 2012 at 07:00 AM

Chicken + Pineapple! Yum!

Coffee + Cream +Pineapple = nausea.

That's just me though.

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1387 · April 06, 2012 at 06:02 AM

I don't think there's much merit to it.

I know if you eat papaya or pineapple with a high protein food, like meat, that's a good idea. Both fruits contain endogenous proteases which aid in the digestion of protein. How can that be bad?

Furthermore, the way the macronutrients are processed are quite different and probably have little impact on one another.

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37013 · April 06, 2012 at 03:47 PM

LikesLardinMayo mentioned one combo that doesn't work for me--dairy with sour fruit. I eat many fruits with my yogurt but pineapple/grapefruit aren't among them. Banana, berries or mango=yum.

I will say that I tend to eat in a sequence of fruit, salad, meat and vegetables rather than a bite here and bite there. On the other hand, while I usually prefer beef plain I have a long history of enjoying pork and poultry with fruit coatings because the result is a "fresher" taste--fish with lemon, anyone?

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100 · April 06, 2012 at 01:20 PM

Google food combining. There's a fairly established 'philosophy' on what foods should or should not be eaten together for digestive health.

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77342 · April 06, 2012 at 07:26 AM

I really don't like anything sweet with meat and never have done. Including honey glazed pork or pineapple rings on gammon. I just don't like those flavours mixed.
I digest meat ok but I get indigestion if I eat fruit after meat. It's the carbs in the fruit, fermenting because they get stuck on top of the meat in the stomach.
This explains it better. http://drbass.com/sequential.html

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506 · April 06, 2013 at 02:48 AM

I'm far from an expert on this, but my understanding is that:

A) Blood glucose rises approx 15-45 minutes after a meal, whereas postprandial lipemia occurs from 2 hours onwards (I seem to think it peaks at 4 hours...?), and

B) Sugar is absorbed directly into the blood via the portal vein, whereas lipids are absorbed via the lymphatic vessels and wind up being emptied into the superior vena cava.

Therefore, unless you are worried about reactions happening in the lumen of your gut, eating sugar and fat together isn't a problem as your bodily neatly separates the peak concentrations of them in your blood both physically and temporally.

If this is the case, eating fatty meat and then waiting 2 hours before eating your fruit is about the worst thing you can do, as you are waiting for the lipid peak concentration and then creating a glucose/fructose peak at the same time. But this is presumably what happens every day to everyone who is following the advice to snack on fruit.

Like I say, this is my basic understanding and I'm happy to be corrected. I'm afraid I don't know much about how all this ties in with proteins.

Personally, I like to leave time to make sure that whatever I last ate, be it sugar, fat or protein, has had time to digest, be absorbed and "peak" in my blood to whatever degree it wants before I shovel more food into my face. This strikes me as common sense more than anything else.

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3737 · April 16, 2012 at 08:50 PM

Perfect Health Diet claims that fructose oxidizes PUFAs and shouldn't be eaten together. It's not clear to me under what conditions that happens but I think mixing in the stomach isn't really the issue. Dr Jaminet still says to try and eat fruit at separate times though. Mostly, I think you don't want to eat meats that have been prepared with fruit and allowed to sit for a long time. Primal Body Primal Mind mentions that protein and fructose are a bad combination but offers little insight into why and provides no reference that I can gather so I say it's bunk until someone else backs that claim up.

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0 · April 05, 2013 at 09:34 PM

ps: a pepper is a fruit :)

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