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Table sugar does not "contain" fructose, just like consuming table salt isn't like throwing a chunk of sodium down your throat. More directly, sucrose consumpt

Table sugar does not "contain" fructose, just like consuming table salt isn't like throwing a chunk of sodium down your throat. More directly, sucrose consumption isn't likely to result in a buffer overflow of fructose because your body regulates the breakdown of sucrose via sucrase production.

bcatanzaro 5y ago
If sucrase production was limited people would be able to easily poison themselves by eating too much sucrose. Sucrose intolerance from sucrase deficiency seems pretty rare though and I’ve never heard that your body regulates the breakdown of sucrose. Seems rather that the body makes how ever much sucrase is necessary to make sure the enzyme is not the limiting factor. I think to a first order, sucrose really is 50% fructose to the human body.
- torstenvl 5y ago
  It's hard to parse out what you're trying to say here. Are you really equating anything less than infinite sucrase to a sucrase deficiency? Not-unlimited does not equal deficient.
scoofy 5y ago
>6. Could the real culprit in fatty liver disease be high-fructose corn syrup, not regular table sugar? After all, it says "high-fructose" right on the label. >Regular table sugar is made up of about 50% fructose, and a common formulation of high-fructose corn syrup (called "HFCS-55") contains 55% fructose. These products are similar enough that there is no evidence of differences in their impact on metabolic health. However, some commercially available formulations of high-fructose corn syrup contain higher proportions of fructose, such as 65% or even higher.21 We do not know whether the health consequences of these products differ from products containing lower concentrations of fructose. UCSF researchers seem to suggest that this isn't actually relevant https://sugarscience.ucsf.edu/alternate-views-toxic-truth.html https://sugarscience.ucsf.edu/alternate-views-toxic-truth.ht...
- wrycoder 5y ago
  Since both sucrose and HFCS are quickly degraded to fructose and glucose, I think the result would be the same as eating a mixture of straight fructose and glucose. TFA speaks to eating straight fructose.
phonypc 5y ago
Undigested sucrose in the large intestine causes bloating, flatulence, diarrhea etc. Doesn't happen in normal circumstances. It's all rapidly broken down into glucose/fructose.

bcatanzaro 5y ago

If sucrase production was limited people would be able to easily poison themselves by eating too much sucrose. Sucrose intolerance from sucrase deficiency seems pretty rare though and I’ve never heard that your body regulates the breakdown of sucrose. Seems rather that the body makes how ever much sucrase is necessary to make sure the enzyme is not the limiting factor. I think to a first order, sucrose really is 50% fructose to the human body.

torstenvl 5y ago
It's hard to parse out what you're trying to say here. Are you really equating anything less than infinite sucrase to a sucrase deficiency? Not-unlimited does not equal deficient.

scoofy 5y ago

>6. Could the real culprit in fatty liver disease be high-fructose corn syrup, not regular table sugar? After all, it says "high-fructose" right on the label. >Regular table sugar is made up of about 50% fructose, and a common formulation of high-fructose corn syrup (called "HFCS-55") contains 55% fructose. These products are similar enough that there is no evidence of differences in their impact on metabolic health. However, some commercially available formulations of high-fructose corn syrup contain higher proportions of fructose, such as 65% or even higher.21 We do not know whether the health consequences of these products differ from products containing lower concentrations of fructose. UCSF researchers seem to suggest that this isn't actually relevant https://sugarscience.ucsf.edu/alternate-views-toxic-truth.html https://sugarscience.ucsf.edu/alternate-views-toxic-truth.ht...

wrycoder 5y ago
Since both sucrose and HFCS are quickly degraded to fructose and glucose, I think the result would be the same as eating a mixture of straight fructose and glucose. TFA speaks to eating straight fructose.

phonypc 5y ago

Undigested sucrose in the large intestine causes bloating, flatulence, diarrhea etc. Doesn't happen in normal circumstances. It's all rapidly broken down into glucose/fructose.