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mises
Joined: 05 Nov 2007
Location: retired
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 Posted: Wed Apr 28, 2010 8:53 am Post subject: Carbs against Cardio |
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http://www.scientificamerican.com/article.cfm?id=carbs-against-cardio&print=true
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Carbs against Cardio: More Evidence that Refined Carbohydrates, not Fats, Threaten the Heart
Eat less saturated fat: that has been the take-home message from the U.S. government for the past 30 years. But while Americans have dutifully reduced the percentage of daily calories from saturated fat since 1970, the obesity rate during that time has more than doubled, diabetes has tripled, and heart disease is still the country�s biggest killer. Now a spate of new research, including a meta-analysis of nearly two dozen studies, suggests a reason why: investigators may have picked the wrong culprit. Processed carbohydrates, which many Americans eat today in place of fat, may increase the risk of obesity, diabetes and heart disease more than fat does�a finding that has serious implications for new dietary guidelines expected this year.
In March the American Journal of Clinical Nutrition published a meta-analysis�which combines data from several studies�that compared the reported daily food intake of nearly 350,000 people against their risk of developing cardiovascular disease over a period of five to 23 years.
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Stampfer�s findings do not merely suggest that saturated fats are not so bad; they indicate that carbohydrates could be worse. A 1997 study he co-authored in the Journal of the American Medical Association evaluated 65,000 women and found that the quintile of women who ate the most easily digestible and readily absorbed carbohydrates�that is, those with the highest glycemic index�were 47 percent more likely to acquire type 2 diabetes than those in the quintile with the lowest average glycemic-index score. (The amount of fat the women ate did not affect diabetes risk.) And a 2007 Dutch study of 15,000 women published in the Journal of the American College of Cardiology found that women who were overweight and in the quartile that consumed meals with the highest average glycemic load, a metric that incorporates portion size, were 79 percent more likely to develop coronary vascular disease than overweight women in the lowest quartile. These trends may be explained in part by the yo-yo effects that high glycemic-index carbohydrates have on blood glucose, which can stimulate fat production and inflammation, increase overall caloric intake and lower insulin sensitivity, says David Ludwig, director of the obesity program at Children�s Hospital Boston.
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�If you reduce saturated fat and replace it with high glycemic-index carbohydrates, you may not only not get benefits�you might actually produce harm,� Ludwig argues. The next time you eat a piece of buttered toast, he says, consider that �butter is actually the more healthful component.� |
For a more affordable health system the population must be more healthy. Reconfiguring the diet guidelines would help. |
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VanIslander
Joined: 18 Aug 2003
Location: Geoje, Hadong, Tongyeong,... now in a small coastal island town outside Gyeongsangnamdo!
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| Posted: Wed Apr 28, 2010 1:11 pm Post subject: |
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| white rice is a refined carbohydrate |
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The Happy Warrior
Joined: 10 Feb 2010
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| Posted: Thu Apr 29, 2010 7:18 pm Post subject: |
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| Finally, this hits Scientific American. Great find, mises. |
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mises
Joined: 05 Nov 2007
Location: retired
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.38 Special
Joined: 08 Jul 2009
Location: Pennsylvania
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| Posted: Sat May 01, 2010 8:16 am Post subject: |
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An interesting, barely-relevant anecdote: When I worked for Kellogg's "back in the day," all Canadian products had different recipes. Their government would not allow all of the "healthy" additives and substitutes that the American recipes used.
Canadian Nutri-Grain bars, by the way, are muy delicious and put the American bars to shame.
My point: We add, substitute, and tinker with our food with reckless abandon and fashionable science when the real culprit of our degrading health is our relative inactivity. |
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mises
Joined: 05 Nov 2007
Location: retired
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| Posted: Sat May 01, 2010 8:27 am Post subject: |
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| .38 Special wrote: |
My point: We add, substitute, and tinker with our food with reckless abandon and fashionable science when the real culprit of our degrading health is our relative inactivity. |
False. Completely false. |
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.38 Special
Joined: 08 Jul 2009
Location: Pennsylvania
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| Posted: Sat May 01, 2010 8:34 am Post subject: |
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| mises wrote: |
| .38 Special wrote: |
My point: We add, substitute, and tinker with our food with reckless abandon and fashionable science when the real culprit of our degrading health is our relative inactivity. |
False. Completely false. |
You go ahead and eat your lab-produced hydrogenated sphincter agitator. I'll blissfully enjoy real shortening, real lard, and real cooking oils. 
Chemicals are for ninnies! |
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mises
Joined: 05 Nov 2007
Location: retired
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| Posted: Sat May 01, 2010 8:40 am Post subject: |
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| A low carb diet combined with 5,000iu's of vitamin d daily would turn the population into a thin, robust and healthy one. This regardless of if they punish their heart with a jog every morning. |
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bucheon bum
Joined: 16 Jan 2003
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| Posted: Sat May 01, 2010 9:02 am Post subject: |
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| mises wrote: |
| A low carb diet combined with 5,000iu's of vitamin d daily would turn the population into a thin, robust and healthy one. This regardless of if they punish their heart with a jog every morning. |
5000 huh? guess i need to jack up my intake then. And hey, that jog every morning will give someone some of that vitamin D  |
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mises
Joined: 05 Nov 2007
Location: retired
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| Posted: Sat May 01, 2010 9:06 am Post subject: |
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| bucheon bum wrote: |
| mises wrote: |
| A low carb diet combined with 5,000iu's of vitamin d daily would turn the population into a thin, robust and healthy one. This regardless of if they punish their heart with a jog every morning. |
5000 huh? guess i need to jack up my intake then. And hey, that jog every morning will give someone some of that vitamin D |
The guidelines that I follow are way out of line with the official. Everybody and their dog in my family has had cancer. That's why I'm so aggressive. |
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TheUrbanMyth
Joined: 28 Jan 2003
Location: Retired
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| Posted: Mon May 03, 2010 4:27 pm Post subject: |
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| mises wrote: |
| A low carb diet combined with 5,000iu's of vitamin d daily would turn the population into a thin, robust and healthy one. This regardless of if they punish their heart with a jog every morning. |
It would have to be low calorie as well.
5000 calories a day will turn nearly everyone overweight regardless of whether it was low carbs and vitamin fortified. |
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bucheon bum
Joined: 16 Jan 2003
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| Posted: Mon May 03, 2010 5:10 pm Post subject: |
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| TheUrbanMyth wrote: |
| mises wrote: |
| A low carb diet combined with 5,000iu's of vitamin d daily would turn the population into a thin, robust and healthy one. This regardless of if they punish their heart with a jog every morning. |
It would have to be low calorie as well.
5000 calories a day will turn nearly everyone overweight regardless of whether it was low carbs and vitamin fortified. |
I think normal calories is fine (ie around 2000 for a person of average height). And 5K doesn't turn athletes overweight. Friend of a friend had to consume 10-12K calories/day when he played water polo in college. |
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Senior
Joined: 31 Jan 2010
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mises
Joined: 05 Nov 2007
Location: retired
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| Posted: Mon May 03, 2010 5:19 pm Post subject: |
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Taubes' 10 points:
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1. Dietary fat, whether saturated or not, is not a cause of obesity, heart disease, or any other chronic disease of civilization
2. The problem is the carbohydrates in the diet, their effect on insulin secretion, and thus the hormonal regulation of homeostasis � the entire harmonic ensemble of the human body. The more easily digestible and refined the carbohydrates, the greater the effect on our health, weight, and well-being.
3. Sugars � sucrose and high-fructose corn syrup specifically � are particularly harmful, probably because the combination of fructose and glucose simultaneously elevates insulin levels while overloading the liver with carbohydrates.
4. Through their direct effect on insulin and blood sugar, refined carbohydrates, starches, and sugars are the dietary cause of coronary heart disease and diabetes. They are the most likely dietary causes of cancer, Alzheimer�s disease, and the other chronic diseases of civilization.
5. Obesity is a disorder of excess fat accumulation, not overeating, and not sedentary behaviour.
6. Consuming excess calories does not cause us to grow fatter, any more than it causes a child to grow taller. Expending more energy than we consume does not lead to long-term weight loss; it leads to hunger.
7. Fattening and obesity are caused by an imbalance � a disequilibrium � in the hormonal regulation of adipose tissue and fat metabolism. Fat synthesis and storage exceed the mobilization of fat from the adipose tissue and its subsequent oxidation. We become leaner when the hormonal regulation of the fat tissue reverses this balance.
8. Insulin is the primary regulator of fat storage. When insulin levels are elevated � either chronically or after a meal � we accumulate fat in our fat tissue. When insulin levels fall, we release fat from our fat tissue and use it for fuel.
9. By stimulating insulin secretion, carbohydrates make us fat and ultimately cause obesity. The fewer carbohydrates we consume, the leaner we will be.
10. By driving fat accumulation, carbohydrates also increase hunger and decrease the amount of energy we expend in metabolism and physical activity.� |
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TheUrbanMyth
Joined: 28 Jan 2003
Location: Retired
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| Posted: Mon May 03, 2010 6:54 pm Post subject: |
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| bucheon bum wrote: |
| TheUrbanMyth wrote: |
| mises wrote: |
| A low carb diet combined with 5,000iu's of vitamin d daily would turn the population into a thin, robust and healthy one. This regardless of if they punish their heart with a jog every morning. |
It would have to be low calorie as well.
5000 calories a day will turn nearly everyone overweight regardless of whether it was low carbs and vitamin fortified. |
I think normal calories is fine (ie around 2000 for a person of average height). And 5K doesn't turn athletes overweight. Friend of a friend had to consume 10-12K calories/day when he played water polo in college. |
Depends on the athlete. And I'm always skeptical when I hear people claiming to consume vast amounts of calories...usually what happens is they've way over estimated. Maybe if you're Michael Phillips or something.
According to several calorie calculators, playing water polo doesn't burn that many calories.
http://www.healthdiscovery.net/links/calculators/calorie_calculator.htm
Let's say this friend of a friend weighted 200 lbs and furthermore that he played water polo for four hours (which seems rather an extreme length of time...but just let's make this assumption).
According to this calculator he would burn around 3840 calories. Even if he weighted twice that much it still wouldn't come close.
The other calculators give figures that are pretty close to this as well.
Yes, yes I know that such calculators can be off and usually provide no more than rough figures...but when there's such a great disparity something up.
Either all these calculators are WAY off or this guy's recollections are off.
Last edited by TheUrbanMyth on Mon May 03, 2010 7:32 pm; edited 2 times in total |
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