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 Post subject: Nutritie - Problema proteinelor
PostPosted: Wed Sep 02, 2009 7:31 pm 
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According to the Max Planck Institute for Nutritional Research in Germany, protein, when cooked, is only 50 percent bioavailable. In other words, about half the amino acids (the building blocks of protein) are unusable by the body because they are destroyed by cooking.

The World Health Organization recommends that 5 percent of one's total daily calories come from protein. This level is easily reached on a plant-based diet. For example, 9 percent of calories in an orange are derived from protein, from zucchini 17 percent, strawberries 8, broccoli 42, cauliflower 31 and corn 13. The fact is that the commonly consumed plant foods contain 6 to 45 percent of their calories as protein.

This research comes from John McDougall, MD. He says, "Protein is so abundant in plant foods that it is impossible for any dietician or scientist to design a diet that is composed of unprocessed plant foods (starches and vegetables) and, at the same time, be deficient in protein. We would not have survived as a species if this were not true."

In the book, Disease-Proof Your Child, Joel Fuhrman, M.D. states, "Protein is ubiquitous; it is contained in all foods, not only animal products. Protein deficiency in not a concern for anyone in the developed world. It is almost impossible to consume too little protein, no matter what you eat... "

All proteins are formed by amino acids joined together in specific sequences. Eight are said to be essential to adults, and 10 essential to infants. The belief that one must eat all essential amino acids at every meal (also called the complete protein theory) in order to maintain health is a myth.

The Wendt Doctrine, describing thirty years of research, debunks the complete protein myth. It proves that we have the ability to store these proteins in our cells and to convert them into amino acids that move freely throughout the body to areas that might be deficient. Therefore, combining beans and rice to supply complex protein is unnecessary. The Wendt Doctrine also shows the damaging effects of excess concentrated protein which clogs the system, depleting the cells of oxygen and nutrition and creates an acidic environment, a condition that eventually leads to degenerative diseases.

The Physicians Committee for Responsible Medicine (PCRM) states that, "...the average American takes in twice the amount of protein he or she needs. Excess protein has been linked with osteoporosis, kidney disease, calcium stones in the urinary tract and some cancers." In the February 2004 issue of Readers Digest , in an article entitled Kicking Kidney Stones, the author states: "The simplest fix is to avoid high-protein diets." Then the author explains how kidney stones are formed. "Protein from meat and other animal products is broken down into acids. It's your kidney's job to balance acids with bases for elimination from the body. The handiest base is the calcium in your bones. Protein is broken down and stored in the bone, where it binds with calcium. Then the kidneys filter these particles from your blood. And the more meat you eat, the more calcium you'll have in your kidneys. Over time, these particles bind together, forming stones."

According to Leslie and Susannah Kenton, in their book, Raw Energy, grilling a steak at 239 degrees Fahrenheit completely destroys the amino acids lysine and cystine. Many researchers believe that the reason more people don't get extremely ill from high-protein diets is due to the fact that about 50 percent of the protein is destroyed by cooking.

(Craig B Sommers, Raw Foods Bible)

What's the period in the human lifespan within which we require the most protein due to our incredibly fast growth ? It's infancy, isn't it ? And what's the protein content of mother's milk, the only food a baby should consume when it needs the most protein ? Only 6%.

(Frederic Patenaude, The Raw Secrets)

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 Post subject: Re: Nutritie - Problema proteinelor
PostPosted: Sat Sep 19, 2009 5:38 pm 
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Protein, the most sacred of all nutrients, is a vital component of our bodies and there are hundreds of thousands of different kinds. They function as enzymes, hormones, structural tissue and transport molecules, all of which make life possible. Proteins are constructed as long chains of hundreds or thousands of amino acids, of which there are fifteen to twenty different kinds, depending on how they are counted.
Proteins wear out on a regular basis and must be replaced. This is accomplished by consuming foods that contain protein. When digested, these proteins give us a whole new supply of amino acid building blocks to use in making new protein replacements for those that wore out.
[...]
This process of disassembling and reassembling the amino acids of proteins is like someone giving us a multicolored string of beads to replace an old string of beads that we lost. However, the colored beads on the string given to us are not in the same order as the string we lost. So, we break the string and collect its beads. Then, we reconstruct our new string so that the colored beads are in the same order as our lost string.
But if we are short of blue beads, for example, making our new string is going to be slowed down or stopped until we get more blue beads. This is the same concept as in making new tissue proteins to match our old worn out proteins.

About eight amino acids ("colored beads") that are needed for making our tissue proteins must be provided by the food we eat. They are called "essential" because our bodies cannot make them. If, like our string of beads, our food protein lacks enough of even one of these eight "essential" amino acids, then the synthesis of the new proteins will be slowed down or stopped.

This is where the idea of protein quality comes into play. Food proteins of the highest quality are, very simply,
those that provide, upon digestion, the right kinds and amounts of amino acids needed to efficiently synthesize our new tissue proteins. This is what that word "quality" really means: it is the ability of food proteins to provide the right kinds and amounts of amino acids to make our new proteins.

Can you guess what food we might eat to most efficiently provide the building blocks for our replacement proteins? The answer is human flesh. Its protein has just the right amount of the needed amino acids. But while our fellow men and women are not for dinner, we do get the next "best" protein by eating other animals. The proteins of other animals are very similar to our proteins because they mostly have the right amounts of each of the needed amino acids. [...] While the "lower quality" plant proteins may be lacking in one or more of the essential amino acids, as a group they do contain all of them.

The concept of quality really means the efficiency with which food proteins are used to promote growth. This would be well and good if the greatest efficiency equaled the greatest health, but it doesn't, and that's why the terms efficiency and quality are misleading.

(The China Study - T. Colin Campbell, Ph.D., and his son, Thomas M. Campbell II. Dr. Campbell is a professor of Nutritional Biochemistry )


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 Post subject: Re: Nutritie - Problema proteinelor
PostPosted: Mon Sep 21, 2009 5:12 pm 
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80% din proteine se recicleaza. evident, procentul este probabil diferit in functie de "calitatea" organismului, ar fi interesant un studiu facut pe vegani raw de multi ani, din pacate nu exista asa ceva.
de asemeni, e interesanta cartea "the golden seven plus one" in care se face asertiunea ca una din principalele functii ale sistemului limfatic este tocmai "curatarea" spatiilor intercelulare de proteine in exces.
n-am gasit-o inca pdf, dar tre sa apara la un moment dat.

uite poza cu proteinele :) http://beldglobal.com/CMS/pages/Lymphatic_System_2.html

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 Post subject: Re: Nutritie - Problema proteinelor
PostPosted: Sat Jan 23, 2010 9:20 pm 
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Pentru cei care isi fac griji ca nu obtin destule proteine/ aminoacizi esentiali, am facut un tabel comparativ cu micronutrinentii si macronutrientii din alune (arahide) crude, linte incoltita, naut (am gasit doar valorile pentru cel uscat, nu incoltit), piept de pui la cuptor.

Informatiile sunt extrase de aici: http://www.nal.usda.gov/fnic/foodcomp/search/

Tabelul il gasiti in pdf-ul atasat. Valorile sunt pentru 100g.


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micronutrienti, macronutrienti - alune, linte, naut, pui.pdf [139.24 KiB]
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 Post subject: Re: Nutritie - Problema proteinelor
PostPosted: Thu Jul 29, 2010 2:30 am 
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Protein is digested to amino acids which are then absorbed into the bloodstream. These amino acids are then absorbed by all cells that require them for growth or the repair of tissue and are built up again into human protein.

All amino acids not needed for growth and repair have to be destroyed. The liver removes the amino group and converts the rest into sugar and then glycogen or fat. The amino group has to be converted into urea which is then removed from the blood by the kidneys.

Both the amino group and urea form an acid solution. Potassium and calcium are needed to neutralise this acid and are lost to the body. Excess protein in the diet puts the liver under stress. The loss of calcium may be made up by removing calcium from the bones and loss of potassium makes it more difficult for the body to balance the acid and alkaline substances in solution. The kidney has to deal with the acid end product of excess protein in the diet and is put under stress.

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 Post subject: Re: Nutritie - Problema proteinelor
PostPosted: Mon Mar 05, 2012 2:33 am 
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Can you guess what food we might eat to most efficiently provide the building blocks for our replacement proteins? The answer is human flesh. Its protein has just the right amount of the needed amino acids.

Asta in teorie. In practica este cu totul alta poveste. Boala vacilor nebune a aparut tocmai la vacile care erau hranite cu proteine provenite din carne si oase de vaci. Nu cred ca s-a reusit identificarea unui lant de interactiuni chimice care arata cum se declanseaza boala pornind de la canibalism. Si in primul rand, sunt absolut convins ca nu s-a dorit o asemenea explicatie. Si chiar daca explicatia a fost gasita si demonstrata dincolo de orice dubiu, "factorii de decizie" au facut sa tot posibilul sa o ascunda de ochii publicului.

Dar ceea ce este clar este ca organismul uman, si chiar si cel animal, este extrem de complex. Aproape infinit de complex. Practic in organismul vacilor fortate sa devina canibale s-au declansat niste mecanisme foarte complexe, care au probabil rolul de a respinge canibalismul. Proteinele ingerate au intrat intr-un proces diferit de asimilare, ceea ce a dus in final la declansarea bolii. Practic este perfect posibil si foarte simplu de imaginat ca, atunci cand organismul vacii a detectat ca proteinele ingerat proveneau din carne si oase de vaca (analizand compozitia si ponderea proteinelor ingerat - exista mecanisme care pot face asa ceva), s-au declansat anumiti stimuli, anumite glande endocrine au inceput sa elibereze secretii in alte cantitati si calitati decat cele obisnuite, iar asta in timp a dus la boala.

Organismul uman nu e chiar asa de prost, sa accepte doar niste proteine si gata. El poate detecta de unde provin acele proteine, in functie de ce fel de proteine sunt si in in functie de ponderea lor in hrana ingerata. Acesti doi parametri pot arata cu o precizie de ceas atomic de unde provin proteinele respective: dint fasole sau din carne de porc sau din carne de vaca, etc. In functie de informatia pe care organismul o receptioneaza, reactia lui poate fi total diferita.

In final, alimentatia este un schimb de informatii.


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 Post subject: Re: Nutritie - Problema proteinelor
PostPosted: Wed Mar 07, 2012 1:14 am 
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Quote:
Can you guess what food we might eat to most efficiently provide the building blocks for our replacement proteins? The answer is human flesh. Its protein has just the right amount of the needed amino acids.

In plus, daca ar fi valabila chestiunea aceasta, atunci ar rezulta ca pentru om ar fi destul de sanatoasa carnea cruda de maimute, in special de cimpanzeu, dar si a altor animale.
Ceea ce este iarasi cam greu de ... "inghitit".


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 Post subject: Re: Nutritie - Problema proteinelor
PostPosted: Fri Jun 29, 2012 11:41 am 
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Location: Paradiso perduto
Am citit la teorii si studii de mi s-a marit capu'. :D

Intrebare, a reusit cineva in concret mai mult decit mentinerea masei musculare la un nivel minim? O nutritie pusa in practica care cu ajutorul activitatii fizice sa conduca la obtinerea unui sistem muscular decent ca aspect si functionalitate?
In teorie si pe hartie totul e minunat si posibil, incepind cu absorbtia nemasurata si terminand cu calitatea nemaivazuta a proteinelor X, dar in practica lucrurile se complica exponential. Eu n-am reusit decit putin de tot, spre foarte putin, spre putin. Si aici progresul a stagnat. sign12

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 Post subject: Re: Nutritie - Problema proteinelor
PostPosted: Fri Jun 29, 2012 12:05 pm 
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exista dvd-uri cu raw vegan bodybuilding, si daca nu mint aia, functioneaza...

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 Post subject: Re: Nutritie - Problema proteinelor
PostPosted: Fri Jun 29, 2012 2:37 pm 
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Location: Charlottenlund, DK
Torin, faci si exercitii fizice? Daca da, ce?

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