Replace all sugar with sucralose?

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sugar is a nutrient that can be very helpful and useful .. replacing sugar with an artificial sweetener is just plain silly. its like drinking non alcoholic beer. the whole reason you would drink a beer in the first place is for the alcohol content .. if you drink too much beer and you can't handle your liquor, thats your own damn fault you pussy . not the beers fault .
same with sugar . just learn to use it with a purpose

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sugar is a nutrient that can be very helpful and useful ..

In what cases?

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In what cases?

well for one, in case of death . a blood glucose (sugar) drip may be administered via IV to save your life in case of severe dehydration.

many endurance athletes at the highest levels would of not of performed at the olympics and set world records if it were not for sugar being a useful tool

[GearHeaded]

also .. biologically speaking . if your blood SUGAR is not maintained at a certain level , you will die . your body stores sugar easily because its an essential nutrient for life . if sugar gets too low , your brain stops working and you will go into a coma and eventually die unless your sugar levels are elevated

the brain can work off ketones instead of sugar , but that takes time to build up . ketones are not just magically there from nothing.
so sugar becomes an essential nutrient in most cases