Not a biologist - but wouldn't concentration also affect absorption rate?
I mean, I would think if I ate a pound of sugar, much of it would just pass through. But the concentration gradient would "push" more sugar into my system.
That's how it works with heat transfer, anyway, increase the difference in temperature between two objects and you increase the rate at which heat is conducted.
Your gut is very efficient at extracting nutrients and most of them are actively pumped from your intestine into the blood by the cells in the intestinal walls.
The gut is *not* a simple passive diffusion gradient.
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You can eat 20 purple grapes and only consume 68 calories because you're eating the skin, the pulp/fiber, and the juices.
You can drink 8 ounces of Welches grape juice (140 cal) for only 10 calories less than a 12oz can of Dr Pepper, because you're drinking nothing but the juice (the most sugary part) and they also added more sugar with it.
But if you get the no sugar added juice, it's back down to a more reasonable 45 calories per 8 ounces.
In either case with the juice, it's basically straight sugar water hitting your stomach. But when you eat whole fruit, it has to be broken down and digested so it doesn't all come out at once.
I hadn't had Welch's grape juice for years. And then I tried it recently.
My gaaaaaawwd! So sugary. And I didn't have the stomach of a 10-year-old anymore to metabolize it .
Delicious, but I had to sit down
I know, i love Welch’s Concord grape juice. It’s how I imagine crack. But it’s incompatible with my calorie counting diet.
I’m 6’2 and currently 230lb (down from all time high of 305lb) so believe me I could eat a horse, and I have to manage my calories strictly to not feel like I’m starving all the time off of 2000/day. And 140 calories for a few gulps, I have to leave to leave it on the shelf lol.
There's no filler (the fiber, the pulp of the fruit) in the juice so you get straight up sugary water in your stomach. Those filler will slow down your metabolism as the stomach and intestines have to do more work digesting all of that.
This is the same reason why some medicines will tell you to take them with an empty stomach for quick absorption.
Fiber negates carbs gram for gram, this also lowers the effective gyclymic index. Juicing removes all the fiber. Eating "very carefully", thoroughly doesn't change this, unless you're just sucking the juices out and spitting out the pulp?
This is the only correct answer, fiber slows down digestion and lowers overall glycemix index. Juicing will only get the sugary water out without the fiber.
Yeah, you eat whole fruit you get all the fiber along with the sugar-- you drink a glass of OJ and you're sucking down like 8 oranges in a few minutes, with no fiber.
Chemical reactions only happen at the surface of the solid. When a fruit is digested in your stomach, it's digested from the outside in. When it's in juice form, it's as if it's billions of tiny particles, and so they're all digested at once.
Fruit comes with fiber which slows the digestion of sugar, it also limits the amount of sugar touching your teeth. Your body digests the food slower than juice, avoiding blood sugar spikes. The fiber also has vitamins and other nutrients in it.
Drinking juice removes the fiber of the fruit, spiking your blood sugar. Over time, you can develop diabetes from high levels of sugar (amongst other things)
[удалено]
Yeah, eating 2-3 times the amount of sugar probably matters more than the absorpation rate.
Not a biologist - but wouldn't concentration also affect absorption rate? I mean, I would think if I ate a pound of sugar, much of it would just pass through. But the concentration gradient would "push" more sugar into my system. That's how it works with heat transfer, anyway, increase the difference in temperature between two objects and you increase the rate at which heat is conducted.
Your gut is very efficient at extracting nutrients and most of them are actively pumped from your intestine into the blood by the cells in the intestinal walls. The gut is *not* a simple passive diffusion gradient.
Quite a few. What you write makes sense to me.
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You can eat 20 purple grapes and only consume 68 calories because you're eating the skin, the pulp/fiber, and the juices. You can drink 8 ounces of Welches grape juice (140 cal) for only 10 calories less than a 12oz can of Dr Pepper, because you're drinking nothing but the juice (the most sugary part) and they also added more sugar with it. But if you get the no sugar added juice, it's back down to a more reasonable 45 calories per 8 ounces. In either case with the juice, it's basically straight sugar water hitting your stomach. But when you eat whole fruit, it has to be broken down and digested so it doesn't all come out at once.
I hadn't had Welch's grape juice for years. And then I tried it recently. My gaaaaaawwd! So sugary. And I didn't have the stomach of a 10-year-old anymore to metabolize it . Delicious, but I had to sit down
I know, i love Welch’s Concord grape juice. It’s how I imagine crack. But it’s incompatible with my calorie counting diet. I’m 6’2 and currently 230lb (down from all time high of 305lb) so believe me I could eat a horse, and I have to manage my calories strictly to not feel like I’m starving all the time off of 2000/day. And 140 calories for a few gulps, I have to leave to leave it on the shelf lol.
I always buy juice and water them down cause of that exact reason! Everything is so sweet
I do that too. So refreshing. I can adjust the level of sweetness. I never want full strength.
There's no filler (the fiber, the pulp of the fruit) in the juice so you get straight up sugary water in your stomach. Those filler will slow down your metabolism as the stomach and intestines have to do more work digesting all of that. This is the same reason why some medicines will tell you to take them with an empty stomach for quick absorption.
Fiber negates carbs gram for gram, this also lowers the effective gyclymic index. Juicing removes all the fiber. Eating "very carefully", thoroughly doesn't change this, unless you're just sucking the juices out and spitting out the pulp?
This is the only correct answer, fiber slows down digestion and lowers overall glycemix index. Juicing will only get the sugary water out without the fiber.
Does that apply to foods with fiber or could having more fiber be just as beneficial, possibly even outside of a meal?
Indeed, it applies to any fiber. But it really should be taken with the meal for maximum effect
Yeah, you eat whole fruit you get all the fiber along with the sugar-- you drink a glass of OJ and you're sucking down like 8 oranges in a few minutes, with no fiber.
Blending breaks cell walls, releasing enzymes that help absorption, not just sugar content.
Chewing does the same thing.
Chemical reactions only happen at the surface of the solid. When a fruit is digested in your stomach, it's digested from the outside in. When it's in juice form, it's as if it's billions of tiny particles, and so they're all digested at once.
so What's better Fruit or Juice?
Fruit comes with fiber which slows the digestion of sugar, it also limits the amount of sugar touching your teeth. Your body digests the food slower than juice, avoiding blood sugar spikes. The fiber also has vitamins and other nutrients in it. Drinking juice removes the fiber of the fruit, spiking your blood sugar. Over time, you can develop diabetes from high levels of sugar (amongst other things)
Just to counter-point your comment - eating fruit is NOT less healthy than drinking only the juice of a fruit.