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A quick refresher on a calorie is a calorie ....
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How so? It repeated those words many times in the study itself.
The PR (and perhaps parts of the text) was potentially misleading because there was actually no difference in the measured (DEXA) fat loss between the two diets in men. The calorie deficit was different between the two diets too - it was greater in the reduced fat diet (p=0.014)
Supplementary table S3 shows that there was no significant measured fat loss in the female subjects on either diet - in fact their % body fat went up (NS).
This wasn't made clear in the headlines, which are all about the calculated extrapolated fat loss.
You're telling me the media misrepresents science?
Nope, never happens.0 -
Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.0
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TEF was covered upthread.0
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sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.
And the differences...as cited above...are insignificant0 -
Aren't these studies over only the short term? Over the long term, it is my understanding that they all sort of result in the same overall weight/fat loss.
the study I am referring to is indeed over the short term. There was no qualification in the OP about duration, the assertion was that all calories are the same.
Hall's study argues contrary to what one might assume to be my "position" but it is explicitly clear that the effect was not the same - "Whereas carbohydrate restriction led to sustained increases in fat oxidation and loss of 53 ± 6 g/day of body fat, fat oxidation was unchanged by fat restriction, leading to 89 ± 6 g/day of fat loss, and was significantly greater than carbohydrate restriction (p = 0.002). " Same calories, different outcome. QED.
Wouldn't low carb increase fat oxidation simply because when one reduces carbs they increase fats? So that fat oxidation would be coming from ingested fats not necessarily stored body fat?0 -
And the differences are marginal at best...sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.0 -
Aren't these studies over only the short term? Over the long term, it is my understanding that they all sort of result in the same overall weight/fat loss.
the study I am referring to is indeed over the short term. There was no qualification in the OP about duration, the assertion was that all calories are the same.
Hall's study argues contrary to what one might assume to be my "position" but it is explicitly clear that the effect was not the same - "Whereas carbohydrate restriction led to sustained increases in fat oxidation and loss of 53 ± 6 g/day of body fat, fat oxidation was unchanged by fat restriction, leading to 89 ± 6 g/day of fat loss, and was significantly greater than carbohydrate restriction (p = 0.002). " Same calories, different outcome. QED.
Wouldn't low carb increase fat oxidation simply because when one reduces carbs they increase fats? So that fat oxidation would be coming from ingested fats not necessarily stored body fat?
Ingested fat + bodyfat lost to make up the deficit.
In other words, "duh".0 -
juggernaut1974 wrote: »But what if I WANT to eat 1000 calories of Oreos?
Well you'll get a stomach ache.0 -
Yes, eat more dietary fat burn more dietary fat..............not body fat. But, people who eat less calories than a bed-ridden person don't seem to understand thatAren't these studies over only the short term? Over the long term, it is my understanding that they all sort of result in the same overall weight/fat loss.
the study I am referring to is indeed over the short term. There was no qualification in the OP about duration, the assertion was that all calories are the same.
Hall's study argues contrary to what one might assume to be my "position" but it is explicitly clear that the effect was not the same - "Whereas carbohydrate restriction led to sustained increases in fat oxidation and loss of 53 ± 6 g/day of body fat, fat oxidation was unchanged by fat restriction, leading to 89 ± 6 g/day of fat loss, and was significantly greater than carbohydrate restriction (p = 0.002). " Same calories, different outcome. QED.
Wouldn't low carb increase fat oxidation simply because when one reduces carbs they increase fats? So that fat oxidation would be coming from ingested fats not necessarily stored body fat?0 -
DoNotSpamMe73 wrote: »juggernaut1974 wrote: »But what if I WANT to eat 1000 calories of Oreos?
Well you'll get a stomach ache.
I challenge your assertion.0 -
sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.
tef was covered up thread and shown to be marginal...
again, that does not change the fact that you get the same amount of energy from 100 calories of oreos as you do from 100 calories of carrots....0 -
sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.
1) Overall (as mentioned by several posters), the effect of TEF is negligible.
2) "Processed" is a broad, vague term and has nothing to do with it. TEF pertains to macronutrients, not whether they're "processed" or not. That's just more "clean eating" propaganda.0 -
sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.
1) Overall (as mentioned by several posters), the effect of TEF is negligible.
2) "Processed" is a broad, vague term and has nothing to do with it. TEF pertains to macronutrients, not whether they're "processed" or not. That's just more "clean eating" propaganda.
1) TEF is not negligible according to some studies
http://www.ncbi.nlm.nih.gov/pubmed/11838888
http://www.foodandnutritionresearch.net/index.php/fnr/article/view/5144
2) Processing a food means altering it from it's natural state in some way. For example, blending bananas and strawberries into a smoothie is processing them, the body uses less energy to digest the blended fruit than the whole fruit.0 -
sourpower434 wrote: »sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.
1) Overall (as mentioned by several posters), the effect of TEF is negligible.
2) "Processed" is a broad, vague term and has nothing to do with it. TEF pertains to macronutrients, not whether they're "processed" or not. That's just more "clean eating" propaganda.
1) TEF is not negligible according to some studies
http://www.ncbi.nlm.nih.gov/pubmed/11838888
http://www.foodandnutritionresearch.net/index.php/fnr/article/view/5144
2) Processing a food means altering it from it's natural state in some way. For example, blending bananas and strawberries into a smoothie is processing them, the body uses less energy to digest the blended fruit than the whole fruit.
When was the last time you swallowed a whole banana instead of chewing it into a smoothie in your mouth?0 -
stevencloser wrote: »sourpower434 wrote: »sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.
1) Overall (as mentioned by several posters), the effect of TEF is negligible.
2) "Processed" is a broad, vague term and has nothing to do with it. TEF pertains to macronutrients, not whether they're "processed" or not. That's just more "clean eating" propaganda.
1) TEF is not negligible according to some studies
http://www.ncbi.nlm.nih.gov/pubmed/11838888
http://www.foodandnutritionresearch.net/index.php/fnr/article/view/5144
2) Processing a food means altering it from it's natural state in some way. For example, blending bananas and strawberries into a smoothie is processing them, the body uses less energy to digest the blended fruit than the whole fruit.
When was the last time you swallowed a whole banana instead of chewing it into a smoothie in your mouth?
LOL, got me there!
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stevencloser wrote: »sourpower434 wrote: »sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.
1) Overall (as mentioned by several posters), the effect of TEF is negligible.
2) "Processed" is a broad, vague term and has nothing to do with it. TEF pertains to macronutrients, not whether they're "processed" or not. That's just more "clean eating" propaganda.
1) TEF is not negligible according to some studies
http://www.ncbi.nlm.nih.gov/pubmed/11838888
http://www.foodandnutritionresearch.net/index.php/fnr/article/view/5144
2) Processing a food means altering it from it's natural state in some way. For example, blending bananas and strawberries into a smoothie is processing them, the body uses less energy to digest the blended fruit than the whole fruit.
When was the last time you swallowed a whole banana instead of chewing it into a smoothie in your mouth?
so chewing is processing?0 -
sourpower434 wrote: »sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.
1) Overall (as mentioned by several posters), the effect of TEF is negligible.
2) "Processed" is a broad, vague term and has nothing to do with it. TEF pertains to macronutrients, not whether they're "processed" or not. That's just more "clean eating" propaganda.
1) TEF is not negligible according to some studies
http://www.ncbi.nlm.nih.gov/pubmed/11838888
http://www.foodandnutritionresearch.net/index.php/fnr/article/view/5144
2) Processing a food means altering it from it's natural state in some way. For example, blending bananas and strawberries into a smoothie is processing them, the body uses less energy to digest the blended fruit than the whole fruit.
Altering the solid state of food doesn't alter the molecular composition. There are still simple/complex carbs, fats and proteins which need to be broken down into sugars, fatty acids and amino acids, respectively. A banana which has been put through a blender still contains everything it did immediately after you peeled it and before you put it in the blender. If I grind a steak into hamburger, it will take no less energy to process the proteins and fats in that burger than it would have in the steak. The only (very negligible difference) would possibly be the microscopically fewer calories I'd expend chewing it.
And as mentioned above, all food is "processed" in your mouth before ingesting it by the chewing process. I don't know of anybody who swallows bananas and strawberries whole in an effort to avoid them being "processed".0 -
sourpower434 wrote: »sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.
1) Overall (as mentioned by several posters), the effect of TEF is negligible.
2) "Processed" is a broad, vague term and has nothing to do with it. TEF pertains to macronutrients, not whether they're "processed" or not. That's just more "clean eating" propaganda.
1) TEF is not negligible according to some studies
http://www.ncbi.nlm.nih.gov/pubmed/11838888
http://www.foodandnutritionresearch.net/index.php/fnr/article/view/5144
2) Processing a food means altering it from it's natural state in some way. For example, blending bananas and strawberries into a smoothie is processing them, the body uses less energy to digest the blended fruit than the whole fruit.
I got the full text of the first link you posted.
http://www.colorado.edu/intphys/Class/IPHY3700_Greene/pdfs/discussionEssay/thermogenesisSatiety/JohnstonThermogenesis2002.pdf
8 kcal/hour higher was the difference after 2.5 hours for breakfast and lunch, 14 for dinner. If it would stay that high (which it won't) it would be 200+ in 24 hours. More reasonable, though they didn't check at later points again to see the differences, would be that it ebbs out pretty quickly to end up at 100 at best.
http://ajcn.nutrition.org/content/79/5/899S.full
This one showed a total of 21 kcal difference for a whole day with a diet of 15% protein vs. 35% protein.0 -
sourpower434 wrote: »sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.
1) Overall (as mentioned by several posters), the effect of TEF is negligible.
2) "Processed" is a broad, vague term and has nothing to do with it. TEF pertains to macronutrients, not whether they're "processed" or not. That's just more "clean eating" propaganda.
1) TEF is not negligible according to some studies
http://www.ncbi.nlm.nih.gov/pubmed/11838888
http://www.foodandnutritionresearch.net/index.php/fnr/article/view/5144
2) Processing a food means altering it from it's natural state in some way. For example, blending bananas and strawberries into a smoothie is processing them, the body uses less energy to digest the blended fruit than the whole fruit.
the first studies sample size is ten females between age 19-22......
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stevencloser wrote: »sourpower434 wrote: »sourpower434 wrote: »Actually, even if 2 foods contain the same amount of energy (calories), the body uses different amount of energy to digest different kinds of food. And the more processed a food is, the less processing needs to be done by the body (so fewer calories are expended to digest). And different macronutrients require different amounts of energy to digest. It takes more energy to digest protein than it does to digest fat or carbs. This is called the thermic effect of food.
1) Overall (as mentioned by several posters), the effect of TEF is negligible.
2) "Processed" is a broad, vague term and has nothing to do with it. TEF pertains to macronutrients, not whether they're "processed" or not. That's just more "clean eating" propaganda.
1) TEF is not negligible according to some studies
http://www.ncbi.nlm.nih.gov/pubmed/11838888
http://www.foodandnutritionresearch.net/index.php/fnr/article/view/5144
2) Processing a food means altering it from it's natural state in some way. For example, blending bananas and strawberries into a smoothie is processing them, the body uses less energy to digest the blended fruit than the whole fruit.
I got the full text of the first link you posted.
http://www.colorado.edu/intphys/Class/IPHY3700_Greene/pdfs/discussionEssay/thermogenesisSatiety/JohnstonThermogenesis2002.pdf
8 kcal/hour higher was the difference after 2.5 hours for breakfast and lunch, 14 for dinner. If it would stay that high (which it won't) it would be 200+ in 24 hours. More reasonable, though they didn't check at later points again to see the differences, would be that it ebbs out pretty quickly to end up at 100 at best.
http://ajcn.nutrition.org/content/79/5/899S.full
This one showed a total of 21 kcal difference for a whole day with a diet of 15% protein vs. 35% protein.
so on the firs study females between age 19 and 22 can expect a 5% increase in calorie burn, assuming a 2000 calorie diet....0
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