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is fructose bad?

by (319)
Updated about 18 hours ago
Created April 06, 2012 at 9:20 AM

is fructose inherently bad for health? please do not answer by saying that the amount in fruit is ok for it misses the point but is generally the only answer i seem to be able to get from google searches.

but what i wish to inquire about is the nature of fructose itself is it inherently disadvantages to human health for some reason outside of an artificially high dose found in commercial food products?

thanks

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15003 · April 08, 2012 at 7:42 PM

I didn't say beneficial. It's a sugar like glucose. Your body can use it. If you're really active and you don't constantly eat to excess, you probably don't need to worry about it. But it's not like it's an essential nutrient or has any other benefit aside from providing energy.

Cf938ac46500e200c97f6adbb3365f64
319 · April 08, 2012 at 7:05 PM

so is it beneficial to health before it is permitted to become "overwhelming to the liver"

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1026 · April 07, 2012 at 10:50 AM

Why do you bring pizza and cola into this? I'm drinking 2 litres of fruit juice, 3 plates of fruit and I don't gain any fat. Lustig says fructose is the cause of all evil. Easy for people to understand, but the theory doesn't work for me. If obesity was as simple as "cut out the fructose", Jimmy Moore would be lean as hell.

B0fe7b5a9a197cd293978150cbd9055f
8933 · April 07, 2012 at 5:31 AM

what about fruitarians, Bill?

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14877 · April 07, 2012 at 3:16 AM

It's good in that fruit may provide valuable antioxidants, vitamins, and minerals, but it's bad from a body composition stand point. I lean out as soon as I remove all fruit/sugar from my diet and replace those lost carbs with safe starch.

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1528 · April 07, 2012 at 2:38 AM

1/4 c. blueberries or 1/2 a mandarin orange are fine. Fructose is a problem when you're slurping down 32 oz. Super Gulps of soda every day. Yes, there are people who buy one of those and then drink them all afternoon, the whole afternoon, by themselves, every day. . . that's the problem, really.

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6709 · April 07, 2012 at 2:17 AM

@Korion, just because you are not drinking your pineapple and grape with your liver already full, after eating a 6000 calorie pizza, and 2 liters of cola, doesn't mean others do not need to educate themselves regarding fructose

1c67bc28f4e44bbb8770b86df0463df3
6709 · April 07, 2012 at 2:15 AM

Yuuuuuuuuuuuuuuuuuuuup.

1c67bc28f4e44bbb8770b86df0463df3
6709 · April 07, 2012 at 2:14 AM

Its poison, but like many poisons it takes a while for the effects to be realized.

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15003 · April 06, 2012 at 6:45 PM

Lots of folks can do great with fructose, especially active folks or athletes.

7dc950fc76a046048e683d2a27dced37
15003 · April 06, 2012 at 6:42 PM

Ha! I'll see what I can do about that Dave :).

A968087cc1dd66d480749c02e4619ef4
20411 · April 06, 2012 at 5:26 PM

Beth is correct, yet again. (I tire of saying this.)

A968087cc1dd66d480749c02e4619ef4
20411 · April 06, 2012 at 5:24 PM

Yes. No. Yes. No. Wait... Maybe? AAAAAAARRRGGGHHHHH!!!!!

D2db41500a9385fafe0f50e178717e80
193 · April 06, 2012 at 4:30 PM

www.youtube.com/watch?v=dBnniua6-oM I recently watched Dr. Lustig's lecture and it cemented some thoughts on fructose for me. "Bad" is probably not the appropriate word for fructose. "Toxic" might be better.

B0fe7b5a9a197cd293978150cbd9055f
8933 · April 06, 2012 at 2:15 PM

how does that explain me doing great with pineapple and grape juice?

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6 Answers

7dc950fc76a046048e683d2a27dced37
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15003 · April 06, 2012 at 12:01 PM

You need to either watch Mat Lalonde's all day seminar by the OPT folks or watch Lustig's TED video. Basically fructose is not "inherently disadvantageous" to human health until it overwhelms the liver's capacity to metabolize it.

And thus, like so many things (including water), the dose makes the poison.

7dc950fc76a046048e683d2a27dced37
15003 · April 08, 2012 at 7:42 PM

I didn't say beneficial. It's a sugar like glucose. Your body can use it. If you're really active and you don't constantly eat to excess, you probably don't need to worry about it. But it's not like it's an essential nutrient or has any other benefit aside from providing energy.

Cf938ac46500e200c97f6adbb3365f64
319 · April 08, 2012 at 7:05 PM

so is it beneficial to health before it is permitted to become "overwhelming to the liver"

80890193d74240cab6dda920665bfb6c
1528 · April 07, 2012 at 2:38 AM

1/4 c. blueberries or 1/2 a mandarin orange are fine. Fructose is a problem when you're slurping down 32 oz. Super Gulps of soda every day. Yes, there are people who buy one of those and then drink them all afternoon, the whole afternoon, by themselves, every day. . . that's the problem, really.

1c67bc28f4e44bbb8770b86df0463df3
6709 · April 07, 2012 at 2:15 AM

Yuuuuuuuuuuuuuuuuuuuup.

7dc950fc76a046048e683d2a27dced37
15003 · April 06, 2012 at 6:42 PM

Ha! I'll see what I can do about that Dave :).

A968087cc1dd66d480749c02e4619ef4
20411 · April 06, 2012 at 5:26 PM

Beth is correct, yet again. (I tire of saying this.)

528b3db9d73974393d4ef162423b1a73
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100 · April 06, 2012 at 12:28 PM

See Sugar: The Bitter Truth on you tube with Dr. Lustig; It explains the whole process of metabolizing fructose and the impact on the body. It's pretty bad when consumed in quantity; hence an orange is okay and fruit juice is not.

685e3c967e63b4eacccf02628fd9a3ac
1026 · April 07, 2012 at 10:50 AM

Why do you bring pizza and cola into this? I'm drinking 2 litres of fruit juice, 3 plates of fruit and I don't gain any fat. Lustig says fructose is the cause of all evil. Easy for people to understand, but the theory doesn't work for me. If obesity was as simple as "cut out the fructose", Jimmy Moore would be lean as hell.

1c67bc28f4e44bbb8770b86df0463df3
6709 · April 07, 2012 at 2:17 AM

@Korion, just because you are not drinking your pineapple and grape with your liver already full, after eating a 6000 calorie pizza, and 2 liters of cola, doesn't mean others do not need to educate themselves regarding fructose

7dc950fc76a046048e683d2a27dced37
15003 · April 06, 2012 at 6:45 PM

Lots of folks can do great with fructose, especially active folks or athletes.

D2db41500a9385fafe0f50e178717e80
193 · April 06, 2012 at 4:30 PM

www.youtube.com/watch?v=dBnniua6-oM I recently watched Dr. Lustig's lecture and it cemented some thoughts on fructose for me. "Bad" is probably not the appropriate word for fructose. "Toxic" might be better.

B0fe7b5a9a197cd293978150cbd9055f
8933 · April 06, 2012 at 2:15 PM

how does that explain me doing great with pineapple and grape juice?

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238 · April 06, 2012 at 8:58 PM

If you'd like to dig into the anti-Lustig side of the fructose debate, Alan Aragon critiques his anti-fructose arguments in the following articles (with responses by Lustig in the comments section):

  1. The bitter truth about fructose alarmism
  2. A retrospective of the fructose alarmism debate

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14877 · April 07, 2012 at 3:07 AM

Seems odd but I thought I read somewhere that it was necessary for healthy sperm motility.

1edb06ded9ccf098a4517ca4a7a34ebc
14877 · April 07, 2012 at 3:16 AM

It's good in that fruit may provide valuable antioxidants, vitamins, and minerals, but it's bad from a body composition stand point. I lean out as soon as I remove all fruit/sugar from my diet and replace those lost carbs with safe starch.

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6709 · April 07, 2012 at 2:21 AM

Id like to remind you of a study. It was conducted while visiting Any Mall USA, go ahead, sit down at the mall and observe. Guess what the extremely large humans typically have in common. Oh, you don't need to guess? They are carrying around big gulps and cinnabons you say??

Wake up human beings, you can't consume massive amounts of sugar in the USA WITHOUT consuming massive amounts of Fructose, its simply IMPOSSIBLE. At least 40% of all 'sugar' consumed in the usa is Fructose. Since 'sugar' is fructose-glucse, and HFCS is a little higher, if your eating sugar, its got fructose.

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