Is what you're eating real or is it frankenfood?
Listening to an Interview with David Gumpert by Jimmy Moore over at Livin' La Vida Low-Carb about raw milk, I wanted to tell a funny story about a kid who grew up on a dairy farm, as related by the dairy farmer we get our raw milk from.
If for one minute you think that the milk you buy in the store is anything like the milk that comes out of a cow, you've never had fresh milk directly from a cow. Luckily we live in Texas, where you are allowed (as if it should even be a question) to buy raw-milk directly from a dairy. There is also recent legislation to make it legal for dairies to sell their products off the farm, i.e. in towns and cities where most people live.
The dairy farmer we get our raw milk from told us how their kid, on the first day of school, received a carton of milk in the lunch room. He took a sip, and took it back up to the lunch ladies and told them it had gone bad. They gave him another carton, he drank a sip of it, and promptly took it back up as well. It tasted bad to him. At that point, they realized he was a dairy farmers' kid, and gave him chocolate milk for the rest of the time he was in school there. Why? Because pasteurized-homogenized-transported-hundreds-of-miles milk is simply bad milk. I'm not saying that all milk should be raw, rather anything produced in a large industrial dairy has to be pasteurized, because they're not clean. Local small dairies are clean though, so there's no reason why they shouldn't be allowed to sell their product.
A little history, pasteurization came about because people did used to get very sick off of raw milk. Back then they did not understand germ theory, did not have antibiotics, and did not have sanitation or refrigeration either. Pasteurization made milk safe to drink for city people in an age of no refrigeration. We on the other hand, living in the 21st century, have sanitation, we understand bacteria and how disease is transmitted, and we have refrigeration as well. It is perfectly safe to drink raw milk because of this. Sometimes we get caught up living in this advanced era, and forget that as late as the civil war doctors did not know how disease spread, and killed many soldiers they were trying to save because they did not wash their hands between procedures. That was only 150 years ago. One of the first to discover that washing your hands might prevent the spread of disease was Ignaz Semmelweis, who discovered this in the mid 19th century, and was thought to be a quack and was ridiculed by his contemporaries. So much for knowing so much.
The moral of this story? Real, fresh food doesn't taste like anything you find in the store. It's like the fresh green beans we grow in the summer. They're so much better than anything you find in the store, even ones from the produce department, because they haven't been transported a thousand miles. When we can't eat them all, we freeze them, and they then aren't as good. Doing things like canning, and freezing food, changes the taste. It doesn't take a big leap of the imagination to realize that it probably changes the vitamin content and the overall healthful nature of the food too.
Showing posts with label usda. Show all posts
Showing posts with label usda. Show all posts
Tuesday, February 22, 2011
Thursday, February 10, 2011
Parrot: "I'm a doctor!"
Are writers incapable of researching stuff before parroting what they're told? Are editors? I hope some are, but it seems like the majority aren't.
For example, this article from US News states that eating too much sodium leads to high blood pressure. Except it doesn't. A dietary reduction in salt can lead to a whopping 1.1 to 5 mmHg at *most*, if you believe meta-analysis. I'm completely underwhelmed. Most high blood pressure is genetic and diet has very little to do with it. If your blood pressure is high you need medication. That's about the only thing you'll hear me say that you need medicine for.
Why don't these doctors do some research instead of relying on Big Brother, er, I mean the government to tell them what to tell their patients? I guess they're too busy to read anything. Or to think for themselves. I find all kinds of interesting information simply searching Science Direct or even google. If they'd recommend to their patients to eat low-carb or paleo, most of their patients' health problems would improve and/or resolve themselves. In fact, I'd bet money on it. I'd even bet a million dollars. I could definitely use a million bucks.
Maybe they're scared? Taubes said in Why we get fat that no doctor was ever sued for recommending a low fat diet. I guess the acceptable killing of patients via the low fat nonsense is preferable to a lawsuit.
For example, this article from US News states that eating too much sodium leads to high blood pressure. Except it doesn't. A dietary reduction in salt can lead to a whopping 1.1 to 5 mmHg at *most*, if you believe meta-analysis. I'm completely underwhelmed. Most high blood pressure is genetic and diet has very little to do with it. If your blood pressure is high you need medication. That's about the only thing you'll hear me say that you need medicine for.
From the article:
"As a family doctor, I've observed that more and more of my practice is devoted to preventing and treating nutrition-related disorders such as high blood pressure, obesity, and diabetes. So I had hoped that the new dietary guidelines would provide me with concrete strategies for helping change my patients' eating habits for the better."
Why don't these doctors do some research instead of relying on Big Brother, er, I mean the government to tell them what to tell their patients? I guess they're too busy to read anything. Or to think for themselves. I find all kinds of interesting information simply searching Science Direct or even google. If they'd recommend to their patients to eat low-carb or paleo, most of their patients' health problems would improve and/or resolve themselves. In fact, I'd bet money on it. I'd even bet a million dollars. I could definitely use a million bucks.
Maybe they're scared? Taubes said in Why we get fat that no doctor was ever sued for recommending a low fat diet. I guess the acceptable killing of patients via the low fat nonsense is preferable to a lawsuit.
Sunday, February 6, 2011
Unintended Consequences: Salt Intake, Obesity and Insulin Resistance
When William Banting wrote his Letter on Corpulence in 1863, the medical community attacked him like piranhas in a lake filled with hemophiliac swimmers. Gary Taubes describes this best in his book Good Calories, Bad Calories:
It was news to me as well. No one told me that I should eat that way. But what else was news to me is this, apparently restricting sodium intake can cause and/or aggravate insulin resistance. In a country with what some call a "diabetes epidemic" why are nutritionists still advocating restricting sodium intake? Especially when lower salt intake does little for lowering blood pressure, which is why it's pushed on the general public in the first place. One review found that a reduction in dietary sodium would amount to systolic blood pressure being lowered by a whopping mean of 1.1 mmHg, and diastolic by an even more underwhelming mean of 0.6 mmHg.
I suppose part of it may be because it seems a lot of the studies done were published in a journal called American Journal of Hypertension over the last 20(!) years, and I guess the "experts" and the "nutritionists" don't read it. I mean, don't read period. Because if they did, they'd have read Taubes and the plethora of other studies that would tell them that what they're telling people is flat out wrong and is killing them.
Not only can salt restriction apparently be bad for insulin resistance, but one study showed giving people more salt helps alleviate it and makes them more sensitive to the insulin.
(The effect of sodium supplementation on glucose tolerance and insulin concentrations in patients with hypertension and diabetes mellitus, from the American Journal of Hypertension, Volume 14, Issue 7, July 2001, Pages 653-659)
One of the most recent and largest studies from the journal Metabolism, took data from 152 healthy people who were prescribed a high or low salt diet. It too found that a low salt diet was associated with increased insulin resistance.
People are expensive to do studies on. You have to pay them to participate. Lab rats on the other hand are cheap and you don't have to pay them anything and you get to dissect them when the study is over so you can obtain even more information on what was going on physiologically. One rat study found:
(Insulin resistance due to chronic salt restriction is corrected by α and β blockade and by l-arginine, from Physiology & Behavior, Volume 88, Issues 4-5, 30 July 2006, Pages 364-370)
If you've been paying attention, insulin resistance (and by extension diabetes) is associated with obesity. Apparently one study showed that restricting salt intake in female Wistar rats predisposed their female offspring to obesity.
Most of the studies say that more and larger studies are needed. As mentioned above, studies are expensive. There were some studies in humans that found the opposite or no correlation between salt intake and insulin resistance, but of these I saw, they used a very small number of people, in one only eight and were very short term. That's not enough subjects or time to get meaningful data. We need large studies with lots of people, that way individual variation is controlled for. All of the rat studies I found showed a correlation with low salt intake and insulin resistance, and since rats are cheap, there were more rats involved than people. It may be that some people are not as effected by low sodium intake as others.
So here we have unintended consequences, in that nutritionists are advocating you messing with your diet for what might amount to a slightly lower blood pressure, at the expense of something else completely unforeseen. How do you like being an unwitting participant in one of the biggest health studies ever made? Because that's what you are if you live in any country that follows the dietary guidelines set forth by the USDA. You may think you have no problem eating as you are, but the food manufacturers have made it a point to remove salt and fat from the food they sell you. So unless you are making a concerted effort to add it back in, you may well be deficient and not even know it.
Common sense is indeed not very common. If excess salt intake had anything to do with ill health, the human race in western Europe and elsewhere would not have survived into the modern era. Last I checked, prior to the 20th century, people did not have refrigeration and used, get this, salt and LOTS of it to cure meat. I doubt there's any way to find out exactly how much they consumed, but it was way more than we do now. And since we don't have reports that medieval people were dropping dead from stroke or heart disease (plague is another matter), I dare say the salt wasn't a primary cause of mortality. Of course, absense of evidence is not evidence of absence, and maybe they just didn't live long enough for the salt to kill them.
"The medical community of Banting's day didn't quite know what to make of him or his diet. Correspondents to the British Medical Journal seemed occasionally open-minded, albeit suitably skeptical; a formal paper was presented on the efficacy and safety of Banting's diet at the 1864 meeting of the British Medical Association. Others did what members of established societies often do when confronted with a radical new concept: they attacked both the message and the messenger. The editors of The Lancet, which is to the BMJ what Newsweek is to Time, were particularly ruthless. First, they insisted that Banting's diet was old news, which it was, although Banting never claimed otherwise. The medical literature, wrote The Lancet, "is tolerably complete, and supplies abundant evidence that all which Mr. Banting advises has been written over and over again." Banting responded that this might well have been so, but it was news to him and other corpulent individuals." [emphasis mine]
It was news to me as well. No one told me that I should eat that way. But what else was news to me is this, apparently restricting sodium intake can cause and/or aggravate insulin resistance. In a country with what some call a "diabetes epidemic" why are nutritionists still advocating restricting sodium intake? Especially when lower salt intake does little for lowering blood pressure, which is why it's pushed on the general public in the first place. One review found that a reduction in dietary sodium would amount to systolic blood pressure being lowered by a whopping mean of 1.1 mmHg, and diastolic by an even more underwhelming mean of 0.6 mmHg.
I suppose part of it may be because it seems a lot of the studies done were published in a journal called American Journal of Hypertension over the last 20(!) years, and I guess the "experts" and the "nutritionists" don't read it. I mean, don't read period. Because if they did, they'd have read Taubes and the plethora of other studies that would tell them that what they're telling people is flat out wrong and is killing them.
Not only can salt restriction apparently be bad for insulin resistance, but one study showed giving people more salt helps alleviate it and makes them more sensitive to the insulin.
"For the group as a whole, urinary sodium excretion increased on sodium chloride to 267 ± 118 mEq/day versus control (placebo) phase of 135 ± 53 mEq/day, P < .001. Total glycemic response in the oral GTT (area under the glucose curve) was 8.0% lower during sodium supplementation, P < .001. Secondary analysis revealed that the effect of sodium was noteworthy in 1) type 2 diabetic subjects (n = 8), 2) sodium -sensitive subjects (n = 10), and 3) nondiabetic subjects receiving antihypertensive drug treatment (n = 6). The total insulinemic response to oral GTT was also lowered by sodium loading among diabetic subjects. Thus, an abundant sodium intake may improve glucose tolerance and insulin resistance, especially in diabetic, salt-sensitive, and or medicated essential hypertensive subjects." [emphasis mine]
(The effect of sodium supplementation on glucose tolerance and insulin concentrations in patients with hypertension and diabetes mellitus, from the American Journal of Hypertension, Volume 14, Issue 7, July 2001, Pages 653-659)
One of the most recent and largest studies from the journal Metabolism, took data from 152 healthy people who were prescribed a high or low salt diet. It too found that a low salt diet was associated with increased insulin resistance.
People are expensive to do studies on. You have to pay them to participate. Lab rats on the other hand are cheap and you don't have to pay them anything and you get to dissect them when the study is over so you can obtain even more information on what was going on physiologically. One rat study found:
"In the present study, higher body weight, blood glucose, plasma insulin, triacylglycerols (triglycerides) and cholesterol, hematocrit and heart rate were observed in animals on low salt intake compared to the normal-salt group. Blood pressure and glucose uptake were lower on low-than on normal-salt diet." [emphasis mine]
(Insulin resistance due to chronic salt restriction is corrected by α and β blockade and by l-arginine, from Physiology & Behavior, Volume 88, Issues 4-5, 30 July 2006, Pages 364-370)
If you've been paying attention, insulin resistance (and by extension diabetes) is associated with obesity. Apparently one study showed that restricting salt intake in female Wistar rats predisposed their female offspring to obesity.
Most of the studies say that more and larger studies are needed. As mentioned above, studies are expensive. There were some studies in humans that found the opposite or no correlation between salt intake and insulin resistance, but of these I saw, they used a very small number of people, in one only eight and were very short term. That's not enough subjects or time to get meaningful data. We need large studies with lots of people, that way individual variation is controlled for. All of the rat studies I found showed a correlation with low salt intake and insulin resistance, and since rats are cheap, there were more rats involved than people. It may be that some people are not as effected by low sodium intake as others.
So here we have unintended consequences, in that nutritionists are advocating you messing with your diet for what might amount to a slightly lower blood pressure, at the expense of something else completely unforeseen. How do you like being an unwitting participant in one of the biggest health studies ever made? Because that's what you are if you live in any country that follows the dietary guidelines set forth by the USDA. You may think you have no problem eating as you are, but the food manufacturers have made it a point to remove salt and fat from the food they sell you. So unless you are making a concerted effort to add it back in, you may well be deficient and not even know it.
Common sense is indeed not very common. If excess salt intake had anything to do with ill health, the human race in western Europe and elsewhere would not have survived into the modern era. Last I checked, prior to the 20th century, people did not have refrigeration and used, get this, salt and LOTS of it to cure meat. I doubt there's any way to find out exactly how much they consumed, but it was way more than we do now. And since we don't have reports that medieval people were dropping dead from stroke or heart disease (plague is another matter), I dare say the salt wasn't a primary cause of mortality. Of course, absense of evidence is not evidence of absence, and maybe they just didn't live long enough for the salt to kill them.
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