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Too much fructose can damage your liver, just like too much alcohol

sugarscience.ucsf.edu

101–110 of 166 posts

Re: Too much fructose can damage your liver, just like too much alcohol

#101

>That excess fructose is broken down by the liver and transformed into fat globules (triglycerides) I believe this is not "that" accurate. Generally the presence of excess carbohydrates cause the body to prioritize sucrose/fructose/glucose to glycogen conversion and storage & usage. Dietary Lipids that are ingested are stored rather than used for energy. While, De novo lipogenesis (turning carbs to lipids) does occur…

> Excess sugars are generally used up by kids who are growing. However, once people reach adulthood, the growth rate slows so significantly that the excess caloric intake forces all the lipids ingested to be stored. Huh? You mention that the SUGARS the kids are eating are used for growth. But then say it's the LIPIDS (dietary fats) that are stored in adults? What about the sugar...? I've always been skinny, and even…

Gaining weight or losing weight is all based on whether one is at a caloric surplus or deficit.

Point was that kids generally have a “higher metabolism” because they are in a growth stage. (Hence using up the sugars) The adolescent body is generating tons of human growth hormone and testosterone to build muscle, bone, cartilage, etc and that activity is calorically intensive.

When people get older, that activity subsides so much that eating at the same rates as an adult leads to weight gain. Plus, kids are generally more active having to walk from class to class while most adults (us office workers) are sitting all day.

The body also likes to stay at a homeostasis of sorts for weight. Listening to you body and only eating when you’re hungry and maintaing weight is a wonderful genetic trait most people have.

Body builders who have wanted to get larger but could not would actually force fed themselves the calories to the point of being mildly sick.

People usually have mentioned post-workout hunger the say of or the next day. Thats where the body lifting weights craves a lot of calories for growing.

Re: Too much fructose can damage your liver, just like too much alcohol

#102
post #61
post #28

Earlier quoted context omitted.

what do you and your wife eat?

Everything except red meat and dairy, honestly. But if you want to know what we believe to be true about which foods are healthy, there's probably no better starting point than Harvard's Healthy Eating Plate. - https://www.hsph.harvard.edu/nutritionsource/healthy-eating-...

What do you mean by "unbound fructose"? I assume fruit juices etc? Harvard's Healthy Eating Plate says "eat plenty of fruits", which says contrary to the advice given by many commenters here.

Re: Too much fructose can damage your liver, just like too much alcohol

#103
post #76
post #53

Earlier quoted context omitted.

What is unbound fructose, and can you give some links about it?

I think he means fructose that is not bound to glucose ..

I think that might be incorrect since it's an easy first step for the body to snap the glucose of the fructose.

Re: Too much fructose can damage your liver, just like too much alcohol

#104
post #85

Is it possible to buy processed foods that have no fructose. Certainly, fructose is sweeter and that's why it's used so much. But would be great to avoid it altogether. I know you can bake with dextrose. I wish I'd taken chemistry. I see a lot of conflicting statements about isomers of glucose.

It frustrates me when I look at things so far from "dessert" like a can of chili, and find corn syrup or even sugar in the ingredients. Most great homemade recipes don't use that sugar, so why should the store bought stuff?

Because you (as a generic customer) will come back to buy more. Customers by now should be aware of significant deviations to the expected ingredients of common, well-known recipes.

Re: Too much fructose can damage your liver, just like too much alcohol

#105
post #100

This is know scientifically for ~10 years now (in a sense that there are some studies, and the biochemistry of mechanisms is know, but the statistical power of the studies might be low... can''t remember, left the biomedical field years ago), and anecdotally since like for ever (google "making fois gras"). Also, for cats and dogs, other sugar (xylitol if I member well) can destroy their livers pretty fast. Fortunatel…

Plus, when you eat sugar your body produces insulin, which instructs your body to stop burning fat and store it straight into your fat cells.

Re: Too much fructose can damage your liver, just like too much alcohol

#106
post #70

Earlier quoted context omitted.

Why would too much fruit be bad? This is sadly a myth that gets formed when “sugar is bad” is oversimplified.

A balanced diet is important. Fruit only covers certain parts. And yes it also has a bit much sugar. Replace 80% of your fruit with veggies and you will be better off.

I agree, but most people should start by replacing most of their food with fruits. All their carbs and sugars should come from fruits first, and once they master that, they can try replacing some of it with veggies.

Re: Too much fructose can damage your liver, just like too much alcohol

#107
post #100

This is know scientifically for ~10 years now (in a sense that there are some studies, and the biochemistry of mechanisms is know, but the statistical power of the studies might be low... can''t remember, left the biomedical field years ago), and anecdotally since like for ever (google "making fois gras"). Also, for cats and dogs, other sugar (xylitol if I member well) can destroy their livers pretty fast. Fortunatel…

Dr. Lustig's argumentation is questionable at best.

http://www.alanaragonblog.com/2010/01/29/the-bitter-truth-ab... https://blogs.scientificamerican.com/brainwaves/is-sugar-rea...

Eat less sugar? Sure! But don't do it because of Dr. Lustig's exaggerations and paranoia. Do it because sugar is calorie-heavy with no real benefit.

Re: Too much fructose can damage your liver, just like too much alcohol

#108

The main title in the article ("The Toxic Truth") is a tribute to UCSF's famous Dr. Lustig of the lecture "Sugar: The Bitter Truth" [1], which is a fascinating and well worthwhile lecture about the biochemistry of fructose as it relates to obesity. I thought I'd just watch a few minutes of it and ended up sitting through it and learning a whole lot. He also wrote a book on the topic("Fat Chance: Beating the Odds Agai…

Here's another serious and level-headed look at Dr. Lustig's claims. He's an alarmist, and we don't need those.

http://www.alanaragonblog.com/2010/01/29/the-bitter-truth-ab...

Re: Too much fructose can damage your liver, just like too much alcohol

#109
post #61
post #28

Earlier quoted context omitted.

what do you and your wife eat?

Everything except red meat and dairy, honestly. But if you want to know what we believe to be true about which foods are healthy, there's probably no better starting point than Harvard's Healthy Eating Plate. - https://www.hsph.harvard.edu/nutritionsource/healthy-eating-...

I don't see eggs in there. Got an opinion on those?
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