Fat burn "biology" of KB ballistics

mprevost

More than 500 posts
I just saw a chart comparing the % calories from various food sources from 1982 to 2012. Grain didn't change, but sugar did. So "carb" has to be differentiated between glucose and fructose. I think in these countries quality glucose carbs like rice have been replaced with white flour products (higher insulin spike), and massively more amounts of sugar (specifically fructose).

I believe the stat was we are designed and adapted to handle 12-24g of fructose a day (a few raw fruits), but the average now is 80g (without the other benefits of fruit - fiber, vitamins, slower to digest, more diluted), with some well over 100g or 25% of daily calories from fructose!

Another thing to consider with fructose is that the metabolic fate of fructose depends, in part, on carbohydrate balance. Most fructose is taken up by the liver (due to high affinity receptors). If you are in a positive carbohydrate balance (either due to high carb or low activity, or both), the liver coverts the fructose to triglycerides and packages them for export in VLDL cholesterol particles (which become LDL).

However, if your liver glycogen levels are not full (either due to low carb or high activity), your liver converts the fructose to glycogen with no ill effects.

So, you can handle more fructose with no ill effects if you are more active, or if your other carbohydrate (besides fructose) consumption is lower.
 

Kettlebelephant

Quadruple-Digit Post Count
@mprevost you need to stop posting things!
I find myself bookmarking too many of your posts, because of the valuable information they contain. :D;)

Just wanted to say thank you for all the good, free info you and others share on the forum.
 

mprevost

More than 500 posts
@mprevost you need to stop posting things!
I find myself bookmarking too many of your posts, because of the valuable information they contain. :D;)

Just wanted to say thank you for all the good, free info you and others share on the forum.
Thanks, just passing along what I have been given. We all have something valuable to offer and I think it is important to take the time to contribute when we can.
 

Sean M

Quadruple-Digit Post Count
Another thing to consider with fructose is that the metabolic fate of fructose depends, in part, on carbohydrate balance. Most fructose is taken up by the liver (due to high affinity receptors). If you are in a positive carbohydrate balance (either due to high carb or low activity, or both), the liver coverts the fructose to triglycerides and packages them for export in VLDL cholesterol particles (which become LDL).

However, if your liver glycogen levels are not full (either due to low carb or high activity), your liver converts the fructose to glycogen with no ill effects.

So, you can handle more fructose with no ill effects if you are more active, or if your other carbohydrate (besides fructose) consumption is lower.
Thanks, that's great stuff. Could you PM me more articles on this? I came across Dr. Robert Lustig's fructose diatribe lecture and have a hunch it is more complicated than he makes it, but am not sure where to look. The landscape is probably tainted by sugar and food industry dis-information...
 
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