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Type of Fat to eat in Atkins ?
Question -
Have there been any studies showing that one type of fat is better than the others in losing weight with respect to weight loss.. ( Don't care here about which fat is healthier, just talking about weight loss goal ). Eg. Does the weighting of monunsaturated,polyunsaturated,saturated affect the amount of weight lost ? |
#2
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Type of Fat to eat in Atkins ?
http://www.physorg.com/news126965682.html
Potential drug target identified for diabetes by studying novel gut-brain-liver circuit Scientists at the Toronto General Hospital Research Institute have discovered a novel signaling pathway between three organs - the gut, the brain, and the liver - which lowers blood sugar when activated. A team led by Dr. Tony Lam used a rat model to discover that fats can activate a subset of nerves in the intestine, which then send a signal to the brain and subsequently to the liver to lower glucose or sugar production. But eating a high-fat diet for just three days can interfere with this signal, disabling it so that it does not signal the other organs to lower blood glucose levels. The research was published in a paper entitled, "Upper intestinal lipids trigger a gut-brain-liver axis to regulate glucose production" as an advance on-line publication of the international science journal Nature. "This is a new approach in developing more effective methods to lower glucose or blood sugar levels in those who are obese or have diabetes," said Dr. Lam, who holds The John Kitson McIvor (1915 - 1942) Chair in Diabetes Research at the University Health Network and University of Toronto. Currently, those with diabetes lower their glucose through diet, exercise, anti-diabetic tablets or insulin injections (usually several times a day) and must regularly monitor blood glucose levels. High glucose levels can result in damage to eyes, nerves and kidneys and increase the risk of heart attack, stroke, blindness, erectile dysfunction, foot problems and amputations. Many laboratories around the world are in a race to find alternative and effective ways in which to lower glucose levels because of the severe complications which can result from high sugar levels. "We already knew that the brain and liver can regulate blood glucose levels, but the question has been, how do you therapeutically target either of these two organs without incurring side effects?" noted Dr. Lam, who is also an Assistant Professor of Physiology and Medicine at the University of Toronto. "We may have found a way around this problem by suggesting that the gut can be the initial target instead. Much like a remote control device, the gut is able to relay a signal to the brain which in turn signals the liver to lower glucose production. If new medicines can be developed that stimulate this sensing mechanism in the gut, we may have an effective way of slowing down the body's production of sugar, thereby lowering blood sugar levels in diabetes." Dr. Lam emphasized that it will take a number of years of experimental work to determine whether this approach is effective and safe in humans who have diabetes. More than two million Canadians have diabetes. "Diabetes is an epidemic in Canada and around the world and its numbers are continuing to increase at an alarming rate, consuming our precious health care resources," says Dr. Gary Lewis, Head of the Division of Endocrinology and Metabolism at the University Health Network and Mount Sinai Hospitals in Toronto and Professor of Medicine and Physiology at the University of Toronto. "We have good evidence from clinical trials which shows that lowering blood glucose levels towards normal in those who develop diabetes has a major impact in preventing its devastating complications, so it is critical that we learn how to control these levels in the most effective and least invasive ways possible. Dr. Lam's work reveals a new regulatory circuit which provides novel sites and targets to lower these levels in diabetes and obesity." Dr. Richard Weisel, Director of the Toronto General Research Institute (TGRI), Professor and Chairman of Cardiac Surgery at the University of Toronto, welcomes any potential interventions which can help lower blood sugar levels. "Studies have shown that people with very high blood glucose levels are more likely to die from heart disease, so anything that we can discover to help lower these levels would help in decreasing the progression of and mortality from cardiovascular disease." "Tony's discovery represents an exciting breakthrough that could eventually lead to new ways to treat diabetes," observed Dr. Diane Finegood, Scientific Director of the Institute of Nutrition, Metabolism and Diabetes, part of the Canadian Institutes of Health Research (CIHR). "I am pleased that CIHR played a major role in funding this research". Working with rats, Dr. Lam and colleagues designed and performed a series of elegant experiments which showed for the first time that the lipids or fats which enter the small intestine trigger the afferent neuronal signal to the brain which then sends signals to the liver to lower glucose production and blood glucose levels in as little as fifteen minutes. No drop in levels occurred when nerves were cut or blocked between the gut and the brain or between the brain and the liver. The trigger to lower glucose was also disabled when rats were fed a high-fat diet for three days prior to the experiment, a finding which may suggest that those who eat a high fat diet lose this beneficial signaling pathway. Source: Canadian Institutes of Health Research -- Ken "Buddhism elucidates why we are sentient." "Buddhism follows thought throughout the Universe." "Karma means that you don't get away with anything." "John" wrote in message ... | Question - | | Have there been any studies showing that one type of fat is better | than the others in losing weight with respect to weight loss.. ( Don't | care here about which fat is healthier, just talking about weight loss | goal ). | | Eg. Does the weighting of monunsaturated,polyunsaturated,saturated | affect the amount of weight lost ? | |
#3
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Type of Fat to eat in Atkins ?
On Apr 17, 5:40*am, John wrote:
Question - Have there been any studies showing that one type of fat is better than the others in losing weight with respect to weight loss.. ( Don't care here about which fat is healthier, just talking about weight loss goal ). Eg. *Does the weighting of monunsaturated,polyunsaturated,saturated affect the amount of weight lost ? The healthiest fats are those we evolved eating which contain the types of fat molecules our bodies can use and also bring with it important fat soluble vitamins. Therefore animal sourced fats are best. Fish oils, tallow, lard, chicken fat, etc. |
#4
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Type of Fat to eat in Atkins ?
On Apr 17, 11:00*am, Tunderbar wrote:
On Apr 17, 5:40*am, John wrote: Question - Have there been any studies showing that one type of fat is better than the others in losing weight with respect to weight loss.. ( Don't care here about which fat is healthier, just talking about weight loss goal ). Eg. *Does the weighting of monunsaturated,polyunsaturated,saturated affect the amount of weight lost ? The healthiest fats are those we evolved eating which contain the types of fat molecules our bodies can use and also bring with it important fat soluble vitamins. Therefore animal sourced fats are best. Fish oils, tallow, lard, chicken fat, etc. If you read the post, he said he didn't care about what was healthiest, only what results in the fastest weight loss, presumably on LC. I've never seen any such studies. |
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Type of Fat to eat in Atkins ?
" wrote:
If you read the post, he said he didn't care about what was healthiest, only what results in the fastest weight loss, presumably on LC. * I've never seen any such studies. Types of fats is a part of Atkins that does get mentioned in various editions of the book, but it doesn't get much stress. I've never figured out if he mentioned the topic for general health reasons, because he suspected loss might be better by type, or if he was concerned about handling undetected deficiencies. Once years ago I read a single study that compared high percentage polyunsaturated fats compared to high percentage saturated fats for the same total calories and claimed the polyunsaturates beat the saturates for loss. Being a single study never repeated, color me skeptical on using it for a conclusion. I want follow-ups that confirm the conclusion and I looked for a couple of years without success. Lack of studies duplicating the result is not a good sign. I think it ended up being a "seek and ye shall find" situation where I dug around until I located a study that said what I was looking for. There are all sorts of individual studies to be found to support almost any claim you care to dream up, so follow-up studies confirming their conclusions matter. There doesn't seem to be much down side to draining off fat that's high in saturates and replacing it with fat that's high in polyunsaturates (say a mixture of nut oils maybe walnut and canola), but thinking that it might trigger better loss is probably wishful thinking. There is a specific case when type of fat will matter for loss - If you are deficient in a specific type of polyunsaturate without knowing it then your body will trigger a starvation mode defense to retain that specific type. It would skew fat metabolism making it appear like slower loss. I've read that specific genetic populations (Amerinds from the Pacific NW, Kelts from NW Europe) need a specific fatty acid from fish oil while other populations can convert plant based versions to it. If someone is in such a population avoids fish their whole life they would end up deficient. If a person is deficient without knowing it, a strategy of persuing healthy fats should handle it and loss rate should increase. Tunderbar's suggestion might help someone who's already having loss rate problems. Not likely to have any effect on someone with 100+ to lose currently losing 6+ pounds per month, someone with 50 pounds to lose currently losing 3+ pounds per month, someone with 10- pounds to lose currently losing 1+ pounds per month. But someone under those ranges of loss rates, may as well try various approaches. |
#6
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Type of Fat to eat in Atkins ?
wrote in message ... On Apr 17, 11:00 am, Tunderbar wrote: On Apr 17, 5:40 am, John wrote: Question - Have there been any studies showing that one type of fat is better than the others in losing weight with respect to weight loss.. ( Don't care here about which fat is healthier, just talking about weight loss goal ). Eg. Does the weighting of monunsaturated,polyunsaturated,saturated affect the amount of weight lost ? The healthiest fats are those we evolved eating which contain the types of fat molecules our bodies can use and also bring with it important fat soluble vitamins. Therefore animal sourced fats are best. Fish oils, tallow, lard, chicken fat, etc. If you read the post, he said he didn't care about what was healthiest, only what results in the fastest weight loss, presumably on LC. I've never seen any such studies. Well, like Doug says, I have read claims that polyunsaturated fats are best at weightloss. I have also read claims that polyunsaturated fats are associated with higher cancer rates, except for CLA, which does the reverse, supposedly. In 1961 Dr. Herman Taller recommended the very new safflower oil (Omega 6) based on his clinical experience. As I recall, in his book, Taller cited a study of pigs. In the study they found that the fat tissue of pigs fed polyunsaturated oil as their fat source developed (upon dissection) fatty tissue that was very soft as compared to control group pigs' body fat. Taller speculated that the softer body fat was easier to remove from the body. Another book I read (female author, I forget who) claimed that Omega 6 polyunsaturated oils caused the brown fatty tissue of the body to burn more calories than they otherwise would. In my personal experience, any fat* can be used for weightloss. The other point about animal fats makes sense, and I also like the ideas of those who advocate coconut as a source of fat based on healthy Islanders. Cubit 320/156/160 *let's consider trans fats or oxidized oils to not be an option |
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