What is GLYCOGEN? What does GLYCOGEN mean? GLYCOGEN meaning, definition & explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/... license. Glycogen is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals and fungi. The polysaccharide structure represents the main storage form of glucose in the body. In humans, glycogen is made and stored primarily in the cells of the liver and the muscles hydrated with three or four parts of water. Glycogen functions as the secondary long-term energy storage, with the primary energy stores being fats held in adipose tissue. Muscle glycogen is converted into glucose by muscle cells, and liver glycogen converts to glucose for use throughout the body including the central nervous system. Glycogen is the analogue of starch, a glucose polymer that functions as energy storage in plants. It has a structure similar to amylopectin (a component of starch), but is more extensively branched and compact than starch. Both are white powders in their dry state. Glycogen is found in the form of granules in the cytosol/cytoplasm in many cell types, and plays an important role in the glucose cycle. Glycogen forms an energy reserve that can be quickly mobilized to meet a sudden need for glucose, but one that is less compact than the energy reserves of triglycerides (lipids). In the liver, glycogen can comprise from 5 to 6% of its fresh weight (100–120 g in an adult). Only the glycogen stored in the liver can be made accessible to other organs. In the muscles, glycogen is found in a low concentration (1-2% of the muscle mass). The amount of glycogen stored in the body—especially within the muscles, liver, and red blood cells—mostly depends on physical training, basal metabolic rate, and eating habits. Small amounts of glycogen are found in the kidneys, and even smaller amounts in certain glial cells in the brain and white blood cells. The uterus also stores glycogen during pregnancy to nourish the embryo.
Steve Phinney Low-carb Preserves Glycogen Better Than High Carb
I can ride continuously for three hours and go 60 miles without any hunger or food cravings or drop off in performance. And I ride as well in the last 20 miles coming home as I do going out. Steve Phinney, can you tell us who you are? Im a medical doctor and have my training in internal medicine. Early in my career developed an interest in nutrition and got a PhD in nutritional biochemistry. That was 30 odd years ago, and since then my primary interests have been in weight management, ie, obesity, exercise and the human economy of the various fats we either put in our mouths or make in our bodies. Youre a star in a Canadian documentary called My Big Fat Diet, because you helped a whole group change their eating habits to reduce insulin resistance and lose a lot of weight. youre the co-author of a book about the Atkins Diet thats been updated by you and two other clinician scientists. Partially correct. I had a bit part in My Big Fat Diet. The star is Dr. James Wortman, a Canadian physician. And yes, Im a coauthor of the updated, new Atkins book which came out last March. Youre also in the process of creating a new book thats more technical about high fat diets. Thats correct. Dr.
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Increased Insulin Resistance With A Low Carb Diet?
Diabetes Forum The Global Diabetes Community Find support, ask questions and share your experiences. Join the community Increased Insulin Resistance with a low carb diet? Bebo321 Family member Well-Known Member @azure @Brunneria @tim2000s , I would be interested to hear your thoughts on an observation of increased insulin resistance with a very low carb/keto diet. I was discussing this topic recently with somebody with T1D (we tried a food fast together over a number of days) They noticed that coming back out of the fast, their insulin requirements had increased fairly significantly in order to manage any carb they ate (the increased requirements only lasted a few days). Interestingly, their basal had remained exactly the same throughout the fast however and blood glucose levels had remained level. This would suggest that their 'insulin resistance' hadn't actually changed at all. What we considered had perhaps happened was that the body had become so effective at burning ketones and generating its own glucose requirements (gluconeogenesis), that once carbs were re-introduced, the body was fairly 'ambivalent' to it - after all, it had everything it needed to fuel itself perfectly w
What is INSULIN RESISTANCE? What does INSULIN RESISTANCE mean? INSULIN RESISTANCE meaning - INSULIN RESISTANCE definition - INSULIN RESISTANCE explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/... license. Insulin resistance (IR) is a pathological condition in which cells fail to respond normally to the hormone insulin. The body produces insulin when glucose starts to be released into the bloodstream from the digestion of carbohydrates in the diet. Normally this insulin response triggers glucose being taken into body cells, to be used for energy, and inhibits the body from using fat for energy. The concentration of glucose in the blood decreases as a result, staying within the normal range even when a large amount of carbohydrates is consumed. When the body produces insulin under conditions of insulin resistance, the cells are resistant to the insulin and are unable to use it as effectively, leading to high blood sugar. Beta cells in the pancreas subsequently increase their production of insulin, further contributing to a high blood insulin level. This often remains undetected and can contribute to a diagnosis of type 2 diabetes or latent autoimmune diabetes of adults. Although this type of chronic insulin resistance is harmful, during acute illness it is actually a well-evolved protective mechanism. Recent investigations have revealed that insulin resistance helps to conserve the brain's glucose supply by preventing muscles from taking up excessive glucose. Insulin resistance should even be strengthened under harsh metabolic conditions such as pregnancy, during which the expanding fetal brain demands more glucose. People who develop type 2 diabetes usually pass through earlier stages of insulin resistance and prediabetes, although those often go undiagnosed. Insulin resistance is a syndrome (a set of signs and symptoms) resulting from reduced insulin action; it is also part of a larger constellation of symptoms called the metabolic syndrome. Insulin resistance may also develop in patients who have recently experienced abdominal or bariatric procedures. This acute form of insulin resistance that may result post-operatively tends to increase over the short-term with sensitivity to insulin typically returning to patients after about five days.
Ketoadaptation And Physiological Insulin Resistance
This is where the magic happens. Rat pups, fed a flaxseed oil-based ketogenic diet from weaning onward – note the drop-off in ketones after 2 weeks (Likhodii et al., 2002): Patient history: these rats have been “low carb” their whole lives. Side note: flaxseed oil is very ketogenic! (Likhodii et al., 2000): Flaxseed oil-based ketogenic diet produced higher ketones than 48h fasting; the same can’t be said for butter or lard. PUFAs in general are more ketogenic than saturated fats in humans, too (eg, Fuehrlein et al., 2004): Crisco keto (adult rats) (Rho et al., 1999): At this point, please just note the stunning consistency in the drop-off of ketones. Experiment 1 & 2 (above) are adult rats; they went through a period of high carb chow dieting, unlike experiment 3 and the rats in the first study, who were weaned onto ketogenic diets. Still same phenomenon: ~few weeks after initiation of ketogenic diet = breakpoint; ketones decline. Ketoadaptation: why do ketone levels decline? This happened in both rat studies above, Phinney 1983, and in many “n=1” practitioners. Possible explanation 1 (ketoadaptation): rat milk is kind of like a low carb diet; high in fat, but not low e
157 Comments Despite all the success you might have had with the Primal way of life, doubts can still nag at you. Maybe it’s something you read, or something someone said to you, or a disapproving glance or offhand comment from a person you otherwise respect, but it’s pretty common when you’re doing something, like giving up grains, avoiding processed food, or eating animal fat, that challenges deeply-and-widely held beliefs about health an ...
I know there are other threads on this topic and I have read a lot of them. I just wonder if there is anything more current than this article from 2007 to help me understand this. Perhaps its still current and valid. Im unclear what to do exactly to reverse this, or do I even need to if its not "pathological". Summary: I am 5-8 pounds over-fat. 10-15 years of labs have all been good/very good for fasting Bg and insulin, until this recent one (the ...
I'm hoping you can give me a simple response to a mess I'veapparently created in my own body. I've queried Petro Dobromylskyj,because it was his blog entry of October 2007 ( )that began to explain to me what was happening to my metabolism. Icontacted Dawn Tasher ( www.peelingbacktheonionlayers.com )because she was a strongly recommended nutritionist, and shesuggested I get in touch with Paul Jaminet, whose work I'd seen onthe internet. I've also ...
Everybody says that insulin resistance is bad. Very bad. It’s the root cause of type 2 diabetes (T2D), and metabolic syndrome, isn’t it? So, if it is so bad, why do we all develop it in the first place? What’s the root cause? My friend Dr. Gary Fettke from Tasmania wrote an illuminating book called ‘Inversion’ where he describes how you can learn a lot from looking at things from another perspective. Invert (turn upside down) your persp ...
The ketogenic diet (KD) is a low-carbohydrate, high-fat diet that is used for a variety of health-related effects. This type of diet is effective at suppressing seizure activity in children with refractory epilepsy (1) and has perhaps more commonly been implemented as a dietary strategy by which weight maintenance or weight loss is the desired outcome. It has been demonstrated that restriction of dietary carbohydrates results in positive effects ...
1. Introduction: the insulin-IGF system The insulin-like growth factor (IGF) system constitutes a hormonal network comprising ligands, receptors and binding proteins. The ligands, insulin, IGF-1 and IGF-2 (herein named IGF-related peptides), have distinct tissues of expression and separate physiological functions. They generally activate different receptors, though both the insulin receptor (IR) and the Type 1 IGF receptor (IGF-1R), despite major ...