|
Protein Sparing
A protein-sparing modified fast or PSMF diet is a type of a very-low-calorie diet (<800 kcal per day) with a high proportion of protein calories and simultaneous restriction of carbohydrate and fat. It includes a protein (nutrient), protein component, fluid balance, fluids, and multivitamin, vitamin and mineral supplementation. PSMF diets can last for up to 6 months, followed by a gradual increase in calories over 6–8 weeks. Description A PSMF attempts to spare the dieter the health risks of a complete fast by introducing the minimum amount of protein necessary to prevent muscle-wasting effects, while still eliminating fats and carbohydrates. Typically, depending on activity level, 0.8–1.2 g of protein per pound of lean body mass (not total body weight) is consumed. Protein beyond this minimum amount is also eliminated, as the body would use it for energy in a process called gluconeogenesis.< ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Very-low-calorie Diet
A very-low-calorie diet (VLCD), also known as semistarvation diet and crash diet, is a type of diet with very or extremely low daily food energy consumption. VLCDs are defined as a diet of per day or less. Modern medically supervised VLCDs use meal replacement, total meal replacements, with regulated formulations in Europe and Canada which contain the recommended daily requirements for vitamins, Dietary mineral, minerals, Essential trace element, trace elements, fatty acids, protein and electrolyte balance. Carbohydrates may be entirely absent, or substituted for a portion of the protein; this choice has important metabolic effects. Medically supervised VLCDs have specific therapeutic applications for rapid weight loss, such as in morbid obesity or before a bariatric surgery, using formulated, nutritionally complete liquid meals containing 800 kilocalories or less per day for a maximum of 12 weeks. Unmonitored VLCDs with insufficient or unbalanced nutrients can cause sudden death ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atkins Diet
The Atkins diet is a low-carbohydrate fad diet devised by Robert Atkins in the 1970s, marketed with claims that carbohydrate restriction is crucial to weight loss and that the diet offered "a high calorie way to stay thin forever". The diet became popular in the early 2000s, with Atkins' book becoming one of the top 50 best-selling books in history, and as many as 1 in 11 North American adults claiming to be following it. Atkins died in 2003 and in 2005 Atkins Nutritionals, Inc. filed for bankruptcy following substantial financial losses. There is no strong evidence of the diet's effectiveness in achieving durable weight loss; it is unbalanced as it promotes unlimited consumption of protein and saturated fat, and it may increase the risk of heart disease.Longe, Jacqueline L. (2008). ''The Gale Encyclopedia of Diets: A Guide to Health and Nutrition''. The Gale Group. pp. 84-87. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Régime Protal
In politics, a regime (also spelled régime) is a system of government that determines access to public office, and the extent of power held by officials. The two broad categories of regimes are democracy, democratic and Autocracy, autocratic. A key similarity across all regimes is the presence of rulers of both formal and informal institutions, which interact dynamically to adapt to changes to their environment The The World Factbook, CIA World Factbook also has a complete list of every country in the world with their respective types of regimes. Usage According to Yale professor Juan José Linz there are three main types of political regimes today: democracies, totalitarian regimes, and authoritarian regimes, with hybrid regimes sitting between these categories. The term regime is often used critically to portray a leader as corrupt or undemocratic. While the term originally referred to any type of government, in modern usage it often has a negative connotation, implyin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fad Diets
A fad diet is a diet that is popular, generally only for a short time, similar to fads in fashion, without being a standard scientific dietary recommendation, and often making unreasonable claims for fast weight loss or health improvements; as such it is often considered a type of pseudoscientific diet.Whitney, Eleanor Noss; Rolfes, Sharon Rady; Crowe, Tim; Walsh, Adam. (2019). ''Understanding Nutrition''. Cengage Learning Australia. pp. 321-325. Fad diets are usually not supported by clinical research and their health recommendations are not peer-reviewed, thus they often make unsubstantiated statements about health and disease. Generally, fad diets promise an assortment of desired changes requiring little effort, thus attracting the interest of consumers uneducated about whole-diet, whole-lifestyle changes necessary for sustainable health benefits. Fad diets are often promoted with exaggerated claims, such as rapid weight loss of more than 1 kg/week, improving health ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proteins As Nutrients
Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, responding to stimuli, providing structure to cells and organisms, and transporting molecules from one location to another. Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the nucleotide sequence of their genes, and which usually results in protein folding into a specific 3D structure that determines its activity. A linear chain of amino acid residues is called a polypeptide. A protein contains at least one long polypeptide. Short polypeptides, containing less than 20–30 residues, are rarely considered to be proteins and are commonly called peptides. The individual amino acid residues are bonded together by peptide bonds and adjacent amino acid residues. The sequence of amino acid resid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stillman Diet
The Stillman diet is a high-protein, low-carbohydrate diet devised in 1967 by physician Irwin Maxwell Stillman (1896–1975). It focuses mostly on the complete avoidance of both fats and carbohydrates, and requires at least eight glasses of water to be consumed every day. The diet is very low in fiber, vitamins and minerals, and cuts out bread, fruit, sugar, and alcohol completely. It was popularized in the late 60's with the publication of Stillman and Samm Sinclair Baker's book, ''The Doctor's Quick Weight Loss Diet'', although it was criticized by some physicians who believed that the diet was unbalanced and could negatively affect users. Overview Stillman and Samm Sinclair Baker co-authored the book ''The Doctor's Quick Weight Loss Diet'' that first advertised the Stillman Diet in 1967. The animal based high-protein diet includes lean beef, veal, chicken, turkey, fish, eggs and non-fat cottage cheese. Spices, tabasco sauce, herbs, salt, and pepper are also allowed. Condiment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low-carbohydrate Diet
Low-carbohydrate diets restrict carbohydrate consumption relative to the average diet (nutrition), diet. Foods high in carbohydrates (e.g., sugar, bread, pasta) are limited, and replaced with foods containing a higher percentage of fat and protein (nutrient), protein (e.g., meat, Poultry#Poultry as food, poultry, fish (food), fish, shellfish, egg (food), eggs, cheese, nut (fruit), nuts, and List of edible seeds, seeds), as well as low carbohydrate foods (e.g. spinach, kale, chard, collards, and other fibrous vegetables). There is a lack of standardization of how much carbohydrate low-carbohydrate diets must have, and this has complicated research. One definition, from the American Academy of Family Physicians, specifies low-carbohydrate diets as having less than 20% of calories from carbohydrates. There is no good evidence that low-carbohydrate dieting confers any particular health benefits apart from weight loss, where low-carbohydrate diets achieve outcomes similar to othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intermittent Fasting
Intermittent fasting is any of various meal timing schedules that cycle between voluntary fasting (or reduced calorie intake) and non-fasting over a given period. Methods of intermittent fasting include alternate-day fasting, periodic fasting, such as the 5:2 diet, and daily time-restricted eating. Intermittent fasting has been studied to find whether it can reduce the risk of diet-related diseases, such as metabolic syndrome. A 2019 review concluded that intermittent fasting may help with obesity, insulin resistance, dyslipidemia, hypertension, and inflammation. There is preliminary evidence that intermittent fasting is generally safe. Adverse effects of intermittent fasting have not been comprehensively studied, leading some academics to point out its risk as a fad diet, dietary fad. The US National Institute on Aging states that there is insufficient evidence to recommend intermittent fasting, and encourages speaking to one's healthcare provider about the benefits and risks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fasting
Fasting is the act of refraining from eating, and sometimes drinking. However, from a purely physiological context, "fasting" may refer to the metabolic status of a person who has not eaten overnight (before "breakfast"), or to the metabolic state achieved after complete digestion and absorption of a meal. Metabolic changes in the fasting state begin after absorption of a meal (typically 3–5 hours after eating). A '' diagnostic fast'' refers to prolonged fasting from 1–100 hours (depending on age), conducted under observation, to facilitate the investigation of a health complication (usually hypoglycemia). Many people may also fast as part of a medical procedure or a check-up, such as preceding a colonoscopy or surgery, or before certain medical tests. '' Intermittent fasting'' is a technique sometimes used for weight loss or other health benefits that incorporates regular fasting into a person's dietary schedule. Fasting may also be part of a religious ritual, often asso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dukan Diet
The Dukan Diet is a High-protein diet, high-protein Low-carbohydrate diet, low-carbohydrate fad diet devised by Pierre Dukan. Description The Dukan diet is a high-protein, low-carbohydrate diet with four phases, each of which has specific rules. History In 1975, Pierre Dukan was a general practitioner in Paris when he was first confronted with a case of obesity. At the time, being overweight or obese was thought to be best treated by low calorie and small sized meals. Dukan thought of an alternative way to prevent patients from regaining their lost weight. He designed a new approach in four phases, including stabilisation and consolidation. After more than 20 years of research Pierre Dukan published his findings in 2000 in his book ''Je ne sais pas maigrir'' (''I don't know how to get slimmer''), which became a best seller. In July 2011, a French court ruled against Dukan in his attempt to sue rival nutritionist Jean-Michel Cohen for libel, after Cohen had criticised his method i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biological Value
Biological value (BV) is a measure of the proportion of absorbed protein from a food which becomes incorporated into the proteins of the organism's body. It captures how readily the digested protein can be used in protein synthesis in the cells of the organism. Proteins are the major source of nitrogen in food. BV assumes protein is the only source of nitrogen and measures the amount of nitrogen ingested in relation to the amount which is subsequently excreted. The remainder must have been incorporated into the proteins of the organisms body. A ratio of nitrogen incorporated into the body over nitrogen absorbed gives a measure of protein "usability" – the BV. Unlike some measures of protein usability, biological value does not take into account how readily the protein can be digested and absorbed (largely by the small intestine). This is reflected in the experimental methods used to determine BV. BV uses two similar scales: #The true percentage utilization (usually shown with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein (nutrient)
Proteins are essential nutrients for the human body. They are one of the constituents of Tissue (biology), body tissue and also serve as a Fuel, fuel source. As fuel, proteins have the same energy density as carbohydrates: 17 Joule, kJ (4 Calories, kcal) per gram. The defining characteristic of protein from a nutritional standpoint is its amino acid composition. Proteins are polymer chains made of amino acids linked by peptide bonds. During human digestion, proteins are broken down in the stomach into smaller polypeptide chains via hydrochloric acid and protease actions. This is crucial for the absorption (small intestine), absorption of the essential amino acids that cannot be biosynthesized by the body. There are nine essential amino acids that humans must obtain from their diet to prevent protein–energy malnutrition, protein-energy malnutrition and resulting death. They are phenylalanine, valine, threonine, tryptophan, methionine, leucine, isoleucine, lysine, and histidin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
