2

votes

what's so bad about fruit?

Answered on August 19, 2014
Created April 24, 2012 at 10:23 PM

Okay, so I know there are many studies showing fructose to be bad for animals and humans, but are there any studies showing fruit to be detrimental to humans in any way shape or form?

I enjoy eating fruit daily but should I be concerned?

0bc04a2ee661857e8458df34646e70ef

(319)

on April 25, 2012
at 02:15 AM

Chris Masterjohn compares HFCS and honey: http://blog.cholesterol-and-health.com/2010/10/high-fructose-corn-syrup-is-sweet.html and Stephen Guyenet examines a study of a mostly fruit diet for weight loss: http://wholehealthsource.blogspot.com/2012/02/is-sugar-fattening.html

77877f762c40637911396daa19b53094

(78467)

on April 25, 2012
at 01:15 AM

We cool.........

9f54852ea376e8e416356f547611e052

(2957)

on April 25, 2012
at 12:48 AM

pretty much my experience with fruit. Fructose (and sugars in general) have been unnecessarily vilified, mostly driven by that talk by Lustig.

9f54852ea376e8e416356f547611e052

(2957)

on April 25, 2012
at 12:46 AM

How is fruit detrimental to weight loss? I've eaten up to 300g of carbs from fruit as PWO meals on a cut for months with no issue.

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 25, 2012
at 12:19 AM

Thanks for your n=1. I feel best eating a combination of meat, fruits, and vegetables as well. I like your approach too- balanced intake of food groups.

Medium avatar

(10663)

on April 25, 2012
at 12:19 AM

Strange, a minute ago it said I was downvoted and now it's no longer there. **Shrugs*. I'm still sorry for pointing my finger at you. We cool?

77877f762c40637911396daa19b53094

(78467)

on April 25, 2012
at 12:16 AM

I did not down vote you, as a matter of fact I just up voted you. Twice. I think your edit is more accurate but I stand by what I said in my comment. It would be inaccurate to say that Fructose isn't good fuel, it's one of the best, it just so happens that we don't need a lot of it unless we are quite active.

Medium avatar

(10663)

on April 25, 2012
at 12:16 AM

My sincerest apologies then.

77877f762c40637911396daa19b53094

(78467)

on April 25, 2012
at 12:13 AM

No, actually I didn't. But thanks for the attitude.

Medium avatar

(10663)

on April 25, 2012
at 12:10 AM

I am well aware that fructose can be converted to glucose.

Medium avatar

(10663)

on April 25, 2012
at 12:09 AM

I guess I know who downvoted me. Sigh... let me clarify what I meant in the first sentence of my answer: we do not use fructose *directly* or *preferentially* as fuel. Capisce?

Medium avatar

(10663)

on April 25, 2012
at 12:06 AM

I think the problem lies with those who are hyperinsulinemic and/or obese whose livers have a more difficult time in processing fructose and rates of lipogenesis are increased. Judging from your profile pic, you're a young lean individual who should have no problem processing fructose quickly and therefore don't have to worry about gaining body fat. A high fructose diet (maybe about 35% of your energy intake; unrealistic in my opinion) may increase triglycerides and VLDL which can lead to cardiovascular disease. Bottom line: don't worry and enjoy nature's candy.

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 25, 2012
at 12:00 AM

haha. Thanks for clearing some things up, LLM. Enjoy your strawberries. I know though, I drop so much money on those pints of fresh organic blueberries. I'd rather pay for health now than for sickness later though.

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 24, 2012
at 11:44 PM

Wow. I like this answer. You sound like you know a lot. Question though; if I'm eating fruit and not gaining any body fat, does that mean it's being burned as energy and not forming AGES? Or does all fructose form ages? I don't consume excessive amounts- usually just 1-4 servings a day, probably averaging 2 servings a day over the course of the year.

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 24, 2012
at 10:53 PM

Yeah, n=1. BUt fruit didn't give them IR/MS, right?

Ecb90bbbd5a15868b2592d517a4a5e82

(280)

on April 24, 2012
at 10:47 PM

Folks with insulin resistance or metabolic syndrome often struggle with fruit - many people can eat it, but a substantial population find they gain on it. It's all N=1 on this, right?

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 24, 2012
at 10:38 PM

Haha. Yeah I don't drink fruit juice at all. But why is even whole fruit detrimental to weight loss? (I assume you meant fat loss because losing weight is just a matter of calories, so I could eat 3 oranges a day and would certainly lose tons of weight)

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 24, 2012
at 10:36 PM

Why is it not good if you're trying to lose weight?

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4 Answers

7
77877f762c40637911396daa19b53094

(78467)

on April 24, 2012
at 11:50 PM

Fruit does not equal fructose and if you are significantly overweight I sincerely doubt a reasonable amount of fruit will cause a stall or weight gain.

For myself I've been both VLC (sub 50gm everyday and 20gm average) and eaten primarily fruit and yams + meat (70% carb) and my weight loss remains consistant. Slightly higher VLC but not hugely. I average 1 lb per week on VLC and 3lbs per month on high carb.

Also the claim that fructose from fruit isn't burned as fuel is wrong. No other word for it. Fructose becomes liver glycogen and is burned off when just sitting on Paleohacks.

We should also consider what excessive is in the context of fruit. I love me some strawberries. So I'm going eat some, say 12 cups of halved strawberries, after all I'm trying to lose weight!!

547 calories...not bad. 86g of carbohydrate 43 of which is fructose

Still under Lustig's 50g of fructose a day to avoid liver issues. Who here can afford 12 cups of berries a day? Who here could actually eat that without being overfull the rest of the day? Whole fruit is just not something you are going to over eat.

Medium avatar

(10663)

on April 25, 2012
at 12:19 AM

Strange, a minute ago it said I was downvoted and now it's no longer there. **Shrugs*. I'm still sorry for pointing my finger at you. We cool?

77877f762c40637911396daa19b53094

(78467)

on April 25, 2012
at 12:13 AM

No, actually I didn't. But thanks for the attitude.

77877f762c40637911396daa19b53094

(78467)

on April 25, 2012
at 01:15 AM

We cool.........

Medium avatar

(10663)

on April 25, 2012
at 12:16 AM

My sincerest apologies then.

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 25, 2012
at 12:00 AM

haha. Thanks for clearing some things up, LLM. Enjoy your strawberries. I know though, I drop so much money on those pints of fresh organic blueberries. I'd rather pay for health now than for sickness later though.

Medium avatar

(10663)

on April 25, 2012
at 12:10 AM

I am well aware that fructose can be converted to glucose.

Medium avatar

(10663)

on April 25, 2012
at 12:09 AM

I guess I know who downvoted me. Sigh... let me clarify what I meant in the first sentence of my answer: we do not use fructose *directly* or *preferentially* as fuel. Capisce?

5
96bf58d8c6bd492dc5b8ae46203fe247

(37227)

on April 25, 2012
at 12:01 AM

I've had to crochet myself some belts in the past week because the pants that were too tight to sit down in a year ago now fall right off my hips. Other than the 1st month of transition from SAD, I've eaten fruit daily while losing that weight. Some days I just peel and eat a grapefruit; other days I'm right around that "50g of fructose" level.

If fruit isn't healthy, why has my gut healed and why don't I have any of the digestive issues discussed on so many PH questions? Why is my blood panel great?

I don't thrive in the absence of any of the following--meat, vegetables/greens and fruits. I simply cannot go more than a day or 2 without eating some of each. Within 3 days of failing to balance my intake I suffer acute symptoms--energy loss, anxiety, excessive hunger, etc.

We evolved eating all availble animal and plant-based foods and plant-based foods and vegetables/fruits are the "gather" in hunter/gatherer. Why would we eat just a few of our natural foods? All the books, journals and documentaries I ever saw about traditional hunter/gatherers emphasized that the resourceful cultures gleaned every scrap of nutrients from their environments.

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 25, 2012
at 12:19 AM

Thanks for your n=1. I feel best eating a combination of meat, fruits, and vegetables as well. I like your approach too- balanced intake of food groups.

9f54852ea376e8e416356f547611e052

(2957)

on April 25, 2012
at 12:48 AM

pretty much my experience with fruit. Fructose (and sugars in general) have been unnecessarily vilified, mostly driven by that talk by Lustig.

3
Medium avatar

(10663)

on April 24, 2012
at 11:29 PM

There's no dietary requirement for fructose and we do not use it as fuel. *EDIT: It is not used directly or preferentially as fuel and it can be converted to glucose.

Fructose can react with proteins (via the maillard reaction) to form advanced glycation end products (AGEs), which cause damage to your body that leads to disease.

To prevent the formation of AGEs, fructose must either be burned immediately or stored as fat. In the liver, metabolism of fructose favors lipogenesis (I don't think the mechanism is really well known here).

The problem with fructose is when you have an excess of fructose, which Kurt G Harris categorizes as one of the Neolithic agents of disease (NADs). And with that, reasonable quantities of fruit per day are okay.

I eat strawberries often and since it's almost summer, I'm not gonna say no to mangoes. But I dunno, maybe supplement with magnesium on days you eat a lot of fruit?

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 24, 2012
at 11:44 PM

Wow. I like this answer. You sound like you know a lot. Question though; if I'm eating fruit and not gaining any body fat, does that mean it's being burned as energy and not forming AGES? Or does all fructose form ages? I don't consume excessive amounts- usually just 1-4 servings a day, probably averaging 2 servings a day over the course of the year.

Medium avatar

(10663)

on April 25, 2012
at 12:06 AM

I think the problem lies with those who are hyperinsulinemic and/or obese whose livers have a more difficult time in processing fructose and rates of lipogenesis are increased. Judging from your profile pic, you're a young lean individual who should have no problem processing fructose quickly and therefore don't have to worry about gaining body fat. A high fructose diet (maybe about 35% of your energy intake; unrealistic in my opinion) may increase triglycerides and VLDL which can lead to cardiovascular disease. Bottom line: don't worry and enjoy nature's candy.

77877f762c40637911396daa19b53094

(78467)

on April 25, 2012
at 12:16 AM

I did not down vote you, as a matter of fact I just up voted you. Twice. I think your edit is more accurate but I stand by what I said in my comment. It would be inaccurate to say that Fructose isn't good fuel, it's one of the best, it just so happens that we don't need a lot of it unless we are quite active.

3
A3ff262a2686d79789e09a26013901b3

on April 24, 2012
at 10:34 PM

Fruit is ok unless your trying to lose weight. But, eating a little whole fruits a day and avoiding fruit juice is still recomended. Just don't over do it.

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 24, 2012
at 10:53 PM

Yeah, n=1. BUt fruit didn't give them IR/MS, right?

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 24, 2012
at 10:38 PM

Haha. Yeah I don't drink fruit juice at all. But why is even whole fruit detrimental to weight loss? (I assume you meant fat loss because losing weight is just a matter of calories, so I could eat 3 oranges a day and would certainly lose tons of weight)

1edb06ded9ccf098a4517ca4a7a34ebc

(14952)

on April 24, 2012
at 10:36 PM

Why is it not good if you're trying to lose weight?

Ecb90bbbd5a15868b2592d517a4a5e82

(280)

on April 24, 2012
at 10:47 PM

Folks with insulin resistance or metabolic syndrome often struggle with fruit - many people can eat it, but a substantial population find they gain on it. It's all N=1 on this, right?

9f54852ea376e8e416356f547611e052

(2957)

on April 25, 2012
at 12:46 AM

How is fruit detrimental to weight loss? I've eaten up to 300g of carbs from fruit as PWO meals on a cut for months with no issue.

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