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"It is accepted that masticatory forces regulate craniofacial growth and the stress is mainly due to the food consistency that causes variations in the mastication movement" (Sardi et al. 2004: 141). This means that facial structures are suited to individual chewing needs. When new preparation and processing methods were introduced, foods became softer and easier to chew. Over time this change in masticatory function contributed to an overall "gracilization" of the human skull and resulted in a smaller human face with reduced jaws and teeth (Larsen 1991, 2006; Sardi et al. 2004). Reduction of the face negatively affected human oral health because human teeth did not reduce proportionately to the jaw and crowding resulted (Larsen 2006). Dental crowding is problematic because it creates tight spaces between the teeth where bacteria can easily grow. These oral bacteria can contribute to plaque build-up and promotes caries, "an oral infectious disease [which] involves the demineralization of the enamel and the underlying dentin and other tissues, caused by the acids produced as a byproduct of the metabolism of dietary carbohydrates, especially sugars" (Larsen 2006:13). Increased occurrence of caries has generally been associated with agricultural lifestyles; however, a study in southeast Asia conducted by Tayes et al. (2000) found that caries decreased with the introduction of rice agriculture, suggesting that rice may be less cariogenic than other starchy staple foods which formed the subsistence base of other Neolithic cultures (Meller et al. 2009).
Similarly, Papathanasiou (2005) found that dental caries were present in low frequencies among the early agriculturalists of Alepotrypa Cave in Greece. Eshed et al. (2010:383) found a decrease in caries among the Neolithiceof the Levant. According to Meller et al. (2009:290), the maize-based diet associated with many prehistoric American agriculturalists was "rich in sticky carbohydrates and sucrose ... thereby, the physical and chemical properties of maize, probably combined with its preparation methods, seem to provide a 96 cariogenic potential in the oral environment." In the Americas there is a clear relationship between maize-based agriculture and increased occurrence of caries (Larsen 1991; Meller et al. 2009; Tayes et al. 2000). Microwear analysis suggests that the new food processing methods of the Neolithic combined with consumption of softer foods may have contributed to caries as well as attrition. "Microwear is displayed as pits and scratches on the teeth. The expression of these features is determined by the consistency of the foods consumed and/or the inclusion of extraneous particles introduced to the food when it is being prepared" (Larsen 2006:13). These "pits and scratches" create environments for cariogenic bacteria. When coarse foods are eaten regularly it wears down the microwear on teeth and helps prevent caries, but when softer foods are eaten the bacteria has an opportunity to thrive in these spaces (Meller et al. 2009). Residue from stones used to grind plant matter and, in dry environments, sand incorporated into foods, have been attributed to promoting caries as well as attrition in Neolithic populations in both the Old World as well as the Americas (Larson 2006; Meller et al. 2009; Papathanasiou 2005). While caries increased most markedly among the maize-based cultures of the Americas, populations of the Old World also saw a decline in oral health. Papathanasiou (2005) cited increases in premortem tooth loss and periodontal disease among the early Greek agriculturalists from Alepotrypa cave.
Periodontal disease, also known as gingivitis, can cause tooth loss and serious damage to the tissue and bone supporting the teeth (Larsen 2006; Papathanasiou 2005). Meller et al. (2009) reported similar findings among the Pica-Tarapaca culture of the Atacama Desert circa 1000 B.P. as well as among the Maya of Mexico. Eshed et al. (2010) cited a decrease in attrition and periodontal disease in the Levant but reported increased occurrence of calculus (tartar or plaque)
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Then a funny thing happened on the way from the preagricultural Mediterranean to the giant farms of today: people, at least some of them, got healthier, presumably as we adapted to the new way of life and food became more evenly distributed. The collection of skeletons from Egypt also shows that by 4,000 years ago, height had returned to its preagricultural levels, and only 20 percent of the population had telltale signs of poor nutrition in their teeth. Those trying to make the point that agriculture is bad for our bodies generally use skeletal material from immediately after the shift to farming as evidence, but a more long-term view is starting to tell a different story. For example, Timothy Gage of the State University of New York at Albany examined long-term mortality records from around the world, along with the likeliest causes of death, and concluded that life span did not decrease, nor did many diseases increase, after agriculture. Some illnesses doubtless grew worse after humans settled down, but life has had its “nasty, brutish, and short” phases at many points throughout history ...
The few existing dental remains reveal that the earliest hominids lived by gathering nuts, berries and other wild vegetation. Without tools, they were only able to consume meat by scavenging eggs or picking carcasses left by predators. Their body structure was that of an herbivore’s as well. A more prominent mandible with sizable grinding molars, such as those of Australopithecus anamensis, made it easier to break down plant fibers. A larger digestive tract with specialized enzymes aided their digestion. Yet, gradually, as primitive tool-making advanced, meat consumption rose dramatically ...
The recipe for tiger nut sweets was actually found on a broken piece of ancient Egyptian pottery and dated to around 1600 BCE, according to the American Research Center in Egypt. Although modern interpretations of the recipe use walnuts, almonds or both, the original recipe used tiger nuts, which are actually tubers of the Cyperus esculentus plant. The tiger nuts were chopped into small pieces and mixed with chopped dates, honey and spices, and then formed into small balls. Ancient Egyptians ate with their fingers, so these bite-sized balls may have been the perfect after-dinner treat or anytime snack.
The available data indicates that the modern trends on caries increases start simultaneously with permanent growth intake of sucrose during the last two centuries. The hypotheses of an increase in the susceptibility or resistance diminishment by genetic reasons or the installation of a particularly cariogenic flora have not been sufficiently corroborated (De Soet & Laine, 2008; Hassell & Harris, 1995; Shuler, 2001; van Palenstein et al., 1996) while dietary changes seem to be the most reasonable answer. In the modern western world and increasingly in other regions of the globe approximately half of consumed calories comes from carbohydrates and almost half of it is sucrose.
Until recently, several populations living in isolated areas of the world kept their ancestral ways of life (for instance, many African tribes, Inuits, South American Indians, Melanesian, Polynesian) under conditions of perfect adaptation to their environments and diets (Donnelly et al., 1977; Mayhall, 1977; Pedersen, 1971; Schamschula et al., 1980; Walker & Hewlett, 1990). Bacteriologic analyses of their dental plaques, although not extensive, show cariogenic species, but those individuals are still developing few or no caries. Otherwise, when those populations were acculturated or simply replaced their traditional diet for an “occidental refined diet”, they started to develop progressively destructive caries patterns ...
The available data indicates that the modern trends on caries increases start simultaneously with permanent growth intake of sucrose during the last two centuries. The hypotheses of an increase in the susceptibility or resistance diminishment by genetic reasons or the installation of a particularly cariogenic flora have not been sufficiently corroborated (De Soet & Laine, 2008; Hassell & Harris, 1995; Shuler, 2001; van Palenstein et al., 1996) while dietary changes seem to be the most reasonable answer. In the modern western world and increasingly in other regions of the globe approximately half of consumed calories comes from carbohydrates and almost half of it is sucrose.
Caries increase tendency seems to have been constant during the second half of the 19th century and the first half of the 20th century, worldwide. On the other hand, preventive policies against caries did not have considerable effects until the second half of 20th century. France and England were major manufacturers of toothbrushes in 19th century, but they were considered luxury articles and regular tooth brushing was not a widespread practice until after the second half of 19th century (Asbell, 1992). Since the 1970s a striking decline in caries experiences has been observed throughout industrialized countries (Brunelle & Carlos, 1990; Shafer et al., 1983). This seems to be related to dental treatment and the introduction of fluoride13 water and toothpaste. Also, the decline in dental caries rates was due to a range of changing social factors that seem to be linked to improvements in general health indicators (Haugejorden, 1996; Nikiforouk, 1985; Shaw, 1985). But in emerging countries the situation is the opposite and high caries rates are associated with malnutrition, absence of health services and poor quality of life (Alvarez, 1988; Campodónico et al., 2001; Heredia & Alva, 2005).
sugarcane, because it has fiber and nutrients (yes! sugarcane is full of nutrients, and is LOW on the glycemic index when consumed whole!) is a healthy additive to your diet. It has been known to fight viruses like cold and flu as well as having cancer fighting compounds. It is also extremely hydrating, and can balance electrolytes when taken after sports since it has a fair amount of potassium. It is also a mild laxative, and can help clear your body of kidney stones and keep the urinary flow clear. Since sugarcane contains no simple sugars either, it's only when we process it that it becomes unhealthy, and contains ample carbohydrates when consumed whole ...
Sugars, whether natural or added, digest the same way. Enzymes secreted by your small intestine quickly convert sugars into glucose, which is the simplest form of sugar. Glucose enters your bloodstream through intestinal walls and enters cells for fuel, with the help of the hormone insulin. Metabolizing sugar happens rapidly, often giving you a burst of energy, after consuming sugar-rich foods ...
Your body uses carbohydrates as its main supply of fuel. Once eaten, the body turns carbs into sugar called glucose. Insulin flushes the glucose into your cells, where it becomes energy. If there is extra glucose left over from the process, it is stored as fat ...
Research has shown that carbohydrate loading helps to raise muscle glycogen content. It is believed that carbohydrate loading the day or night prior to a long endurance will provide adequate and extra energy to muscles. Although Carbohydrate loading is popular practice; many are unaware of the process and benefits. Carbohydrates are a main fuel source of the body and help in overall muscle use. Glycogen is the main energy source used by muscles and provides energy during exercise and physical activity. A vast number of studies have been conducted on carbohydrate loading; through this research it has been confirmed that when done properly, carbohydrate loading does work. Carbohydrate loading used to increase or elevate muscle glycogen content higher than normally has been shown to increases energy during endurance events. A study conducted in 1996 by Akermark, C et all; examined Swedish hockey players; the players were randomly split into two groups. The athletes were either given a high carbohydrate diet or a regular mixed foods diet. The players who consumed the carbohydrate rich diet showed improvement in overall speed, distance, and time skating compared to that of the players on a regular diet ...
Sports drinks have been researched extensively and generally provide an excellent alternative to plain water for hard working athletes. During intensive aerobic exercise, the body’s preferred source of fuel is carbohydrate (rather than protein or fat) due to the efficiency of energy transfer to fatigued muscles. The majority of sports drinks are formulated to deliver carbohydrates, electrolytes and fluids in such a way that will minimize stomach upset and maximize intestinal absorption for delivery of energy to muscles ...
The story begins in 1971. Richard Nixon was facing re-election. The Vietnam war was threatening his popularity at home, but just as big an issue with voters was the soaring cost of food. If Nixon was to survive, he needed food prices to go down, and that required getting a very powerful lobby on board – the farmers. Nixon appointed Earl Butz, an academic from the farming heartland of Indiana, to broker a compromise. Butz, an agriculture expert, had a radical plan that would transform the food we eat, and in doing so, the shape of the human race.
Butz pushed farmers into a new, industrial scale of production, and into farming one crop in particular: corn. US cattle were fattened by the immense increases in corn production. Burgers became bigger. Fries, fried in corn oil, became fattier. Corn became the engine for the massive surge in the quantities of cheaper food being supplied to American supermarkets: everything from cereals, to biscuits and flour found new uses for corn ...
By the mid-70s, there was a surplus of corn. Butz flew to Japan to look into a scientific innovation that would change everything: the mass development of high fructose corn syrup (HFCS), or glucose-fructose syrup as it's often referred to in the UK, a highly sweet, gloppy syrup, produced from surplus corn, that was also incredibly cheap. HFCS had been discovered in the 50s, but it was only in the 70s that a process had been found to harness it for mass production. HFCS was soon pumped into every conceivable food: pizzas, coleslaw, meat. It provided that "just baked" sheen on bread and cakes, made everything sweeter, and extended shelf life from days to years. A silent revolution of the amount of sugar that was going into our bodies was taking place. In Britain, the food on our plates became pure science – each processed milligram tweaked and sweetened for maximum palatability. And the general public were clueless that these changes were taking place.
There was one product in particular that it had a dramatic effect on – soft drinks. Hank Cardello, the former head of marketing at Coca-Cola, tells me that in 1984, Coke in the US swapped from sugar to HFCS (In the UK, it continued to use sugar). As a market leader, Coke's decision sent a message of endorsement to the rest of the industry, which quickly followed suit. There was "no downside" to HFCS, Cardello says. It was two-thirds the price of sugar, and even the risk of messing with the taste was a risk worth taking when you looked at the margin, especially as there were no apparent health risks. At that time, "obesity wasn't even on the radar" says Cardello ...
Fructose intake has recently received considerable media attention, most of which has been negative. The assertion has been that dietary fructose is less satiating and more lipogenic than other sugars. However, no fully relevant data have been presented to account for a direct link between dietary fructose intake and health risk markers such as obesity, triglyceride accumulation and insulin resistance in humans. First: a re-evaluation of published epidemiological studies concerning the consumption of dietary fructose or mainly high fructose corn syrup shows that most of such studies have been cross-sectional or based on passive inaccurate surveillance, especially in children and adolescents, and thus have not established direct causal links. Second: research evidence of the short or acute term satiating power or increasing food intake after fructose consumption as compared to that resulting from normal patterns of sugar consumption, such as sucrose, remains inconclusive. Third: the results of longer-term intervention studies depend mainly on the type of sugar used for comparison. Typically aspartame, glucose, or sucrose is used and no negative effects are found when sucrose is used as a control group.
Negative conclusions have been drawn from studies in rodents or in humans attempting to elucidate the mechanisms and biological pathways underlying fructose consumption by using unrealistically high fructose amounts.
The issue of dietary fructose and health is linked to the quantity consumed, which is the same issue for any macro- or micro nutrients. It has been considered that moderate fructose consumption of ≤50g/day or ~10% of energy has no deleterious effect on lipid and glucose control and of ≤100g/day does not influence body weight. No fully relevant data account for a direct link between moderate dietary fructose intake and health risk markers ...
Intuitively, people choose non-caloric artificial sweeteners over sugar to lose or maintain weight. Sugar provides a large amount of rapidly absorbable carbohydrates, leading to excessive energy intake, weight gain, and metabolic syndrome [15,16,17]. Sugar and other caloric sweeteners such as high fructose corn syrup have been cast as the main culprits of the obesity epidemic. Whether due to a successful marketing effort on the part of the diet beverage industry or not, the weight conscious public often consider artificial sweeteners “health food” [6]. But do artificial sweeteners actually help reduce weight?
Surprisingly, epidemiologic data suggest the contrary. Several large scale prospective cohort studies found positive correlation between artificial sweetener use and weight gain. The San Antonio Heart Study examined 3,682 adults over a seven- to eight-year period in the 1980s [18]. When matched for initial body mass index (BMI), gender, ethnicity, and diet, drinkers of artificially sweetened beverages consistently had higher BMIs at the follow-up, with dose dependence on the amount of consumption. Average BMI gain was +1.01 kg/m2 for control and 1.78 kg/m2 for people in the third quartile for artificially sweetened beverage consumption. The American Cancer Society study conducted in early 1980s included 78,694 women who were highly homogenous with regard to age, ethnicity, socioeconomic status, and lack of preexisting conditions [19]. At one-year follow-up, 2.7 percent to 7.1 percent more regular artificial sweetener users gained weight compared to non-users matched by initial weight. The difference in the amount gained between the two groups was less than two pounds, albeit statistically significant. Saccharin use was also associated with eight-year weight gain in 31,940 women from the Nurses’ Health Study conducted in the 1970s [20]. ...
Occurrence of sweeteners in German surface waters
In all German surface waters analyzed, acesulfame,saccharin, cyclamate, and sucralose were detected, which proved the observed incomplete removal in STPs (Fig. 3and Table S7, Electronic Supplementary Material). Sweet-energy levels in the investigated German rivers correspond to STP effluent concentrations when taking into account a dilution approximately between a factor of 10 and a factor of 100.
Acesulfame was found in several samples in concentrations higher than
2μ g/L and, in most cases, occurred in about tenfold higher concentrations than other sweeteners. Saccharin and cyclamate were detected at levels between 50 and 150ng/L in the majority of the river water samples. Findings of sucralose in German rivers were in excellent correlation to the values obtained for Germany in the EU-wide monitoring program [30]. Most samples showed sucralose concentrations between 60 and 8ng/L with only one value exceeding 100 ng/L.Aspartame, neotame, and NHDC were again not detected in any analyzed sample.
Conclusions
The method developed allows the simultaneous extraction and analysis of seven artificial sweeteners from difficult environmental matrices, such aswaste water and surface water. Accurate quantification could be achieved by the use of a deuterated standard and sample dilution. Application of this method to waste water samples, samples obtained from a soil aquifer site, and surface water samples demonstrated incomplete removal of some of these compounds during waste water purification. Due to their use as food additives, the occurrence of artificial sweetener traces in the aquatic environment might become a primary issue of consumer acceptance, especially as the aspect of drinking water quality, which might be negatively influenced by potential metabolites of these trace pollutants, is completely un-known yet ...
How does FDA regulate the use of high-intensity sweeteners in food?
A high intensity sweetener is regulated as a food additive, unless its use as a sweetener is generally recognized as safe (GRAS). The use of a food additive must undergo premarket review and approval by FDA before it can be used in food. In contrast, use of a GRAS substance does not require premarket approval. Rather, the basis for a GRAS determination based on scientific procedures is that experts qualified by scientific training and experience to evaluate its safety conclude, based on publically available information, that the substance is safe under the conditions of its intended use. A company can make an independent GRAS determination for a substance with or without notifying FDA. Regardless of whether a substance is approved for use as a food additive or its use is determined to be GRAS, scientists must determine that it meets the safety standard of reasonable certainty of no harm under the intended conditions of its use. This standard of safety is defined in FDA’s regulations. ...
By increasing palatability of nutrient-dense foods/beverages, sweeteners can promote diet healthfulness. Scientific evidence supports neither that intakes of nutritive sweeteners by themselves increase the risk of obesity nor that nutritive or nonnutritive sweeteners cause behavioral disorders. However, nutritive sweeteners increase risk of dental caries. High fructose intakes may cause hypertriglyceridemia and gastrointestinal symptoms in susceptible individuals. Thus, it is the position of The American Dietetic Association that consumers can safely enjoy a range of nutritive and nonnutritive sweeteners when consumed in a diet that is guided by current federal nutrition recommendations, such as the Dietary Guidelines for Americans and the Dietary References Intakes, as well as individual health goals. Dietetics professionals should provide consumers with science-based information about sweeteners and support research on the use of sweeteners to promote eating enjoyment, optimal nutrition, and health. ...
After a month on this intermittent-feeding schedule, the animals show a series of behaviors similar to the effects of drugs of abuse. These are categorized as “bingeing”, meaning unusually large bouts of intake, opiate-like “withdrawal” indicated by signs of anxiety and behavioral depression (Colantuoni et al., 2001, 2002), and “craving” measured during sugar abstinence as enhanced responding for sugar (Avena et al., 2005). There are also signs of both locomotor and consummatory “cross-sensitization” from sugar to drugs of abuse (Avena et al., 2004, Avena and Hoebel, 2003b) ...
Recent findings Recent work on food use disorders has demonstrated that the same neurobiological pathways that are implicated in drug abuse also modulate food consumption, and that the body's regulation of food intake involves a complex set of peripheral and central signaling networks. Moreover, new research indicates that rats can become addicted to certain foods, that men and women may respond differently to external food cues, and that the intrauterine environment may significantly impact a child's subsequent risk of developing obesity, diabetes, and hypercholesterolemia ...
As a person desires the sense of euphoria that accompanies a certain drug and finds that after their first use that taking the same amount does not result in the sense of pleasure that the first use did, they begin to take more and more in hopes of replicating the initial feeling. Depending on the drug, this binge can take place over a matter of hours, or as long as several days ...
The Diagnostic and Statistical Manual of Mental Disorders (ed. 4) defines binge eating as a series of recurrent binge episodes in which each episode is defined as eating a larger amount of food than normal during a short period of time (usually within any 2-h period)
To put it simply, people usually binge on highly palatable energy-rich food. These foods are typically high in fats, sugars, or often both (8,9). Binge episodes often involve consumption of bread or pasta, followed in frequency by sweets, fatty foods, or salty snacks (10). Individuals with a preference for bingeing on sweet foods tend to binge more frequently ...
The researchers hooked the rats on coc aine by delivering intravenous doses when the rodents pushed a lever in their cages. The researchers then made the rats quit cold turkey by replacing the coc aine with a saline solution. After a week, the animals stopped pressing the lever seeking a coc aine fix.
The researchers then sought to trigger a relapse by electrically stimulating two parts of the brain.
One was the "reward" or "liking" center that registers the high from using the drug -- a brain pathway that involves a chemical called dopamine.
The other was in the hippocampus region of the brain, which is associated with memory and involves glutamate, an entirely different brain chemical. This region appears to register the memory of a drug's effects and the craving for it, Vorel said.
Stimulating the hippocampus caused an intense craving for coc aine, the study found. The rats repeatedly pressed the lever that previously had delivered coc aine ...
There are three regions of the of the brain – the hippocampus, insula, and caudate nucleus – that appear to be activated during food-craving episodes. What’s most interesting, however, is that these are the areas of the brain responsible for memory and sensing pleasure.
This makes perfect sense if you think about it, because when do you notice those intense food cravings coming up? For most of us, research says, cravings get intense when we’re stressed or anxious. Memory-related food cravings are indeed that: Our bodies are yearning for the good times and the good feelings of the memory that’s associated with a particular food ...
The authors found that, while sugar may seem addictive instinctively, the scientific literature is lacking substantial evidence that this is true. One reason for this is that different areas of the brain are activated in rodents when they crave food compared to when they crave drugs. While both types of cravings activate the nucleus accumbens (a brain region associated with motivation and the reward system) they activate different parts of the nucleus accumbens. Another reason is that, when rats obtain the desired sugar or drugs, their brains release dopamine, a chemical which is important in motivation and reward; however, this dopamine release quickly returns to its original levels after repeated administrations of sugar, but not for coc aine. Additionally, in many studies claiming to find sugar addiction in rodents, researchers pre-select animals for the study which already have a strong response to sugar. Furthermore, the addiction-like behavior only occurs under very specific experimental conditions, such as food deprivation. “It is important to be aware that these studies were conducted under conditions that do not resemble our typical environments,” says Margaret Westwater, the lead author on the study ....
PATIENTS AND METHODS: In the present study, 83 obese patients (39 men and 44 women) with a body mass index greater than 35 kg/m2, and high glucose and cholesterol levels were selected. The body weight, body mass index, total cholesterol, low density lipoprotein (LDL) cholesterol, high density lipoprotein (HDL) cholesterol, triglycerides, fasting blood sugar, urea and creatinine levels were determined before and after the administration of the ketogenic diet. Changes in these parameters were monitored after eight, 16 and 24 weeks of treatment.
RESULTS: The weight and body mass index of the patients decreased significantly. The level of total cholesterol decreased from week 1 to week 24. HDL cholesterol levels significantly increased, whereas LDL cholesterol levels significantly decreased after treatment. The level of triglycerides decreased significantly following 24 weeks of treatment. The level of blood glucose significantly decreased. The changes in the level of urea and creatinine were not statistically significant.
CONCLUSIONS: The present study shows the beneficial effects of a long-term ketogenic diet. It significantly reduced the body weight and body mass index of the patients. Furthermore, it decreased the level of triglycerides, LDL cholesterol and blood glucose, and increased the level of HDL cholesterol. Administering a ketogenic diet for a relatively longer period of time did not produce any significant side effects in the patients. Therefore, the present study confirms that it is safe to use a ketogenic diet for a longer period of time than previously demonstrated ...
Design: Seventeen overweight or obese men were admitted to metabolic wards, where they consumed a high-carbohydrate baseline diet (BD) for 4 wk followed by 4 wk of an isocaloric KD with clamped protein. Subjects spent 2 consecutive days each week residing in metabolic chambers to measure changes in EE (EEchamber), sleeping EE (SEE), and RQ. Body composition changes were measured by dual-energy X-ray absorptiometry. Average EE during the final 2 wk of the BD and KD periods was measured by doubly labeled water (EEDLW).
Results: Subjects lost weight and body fat throughout the study corresponding to an overall negative energy balance of ∼300 kcal/d. Compared with BD, the KD coincided with increased EEchamber (57 ± 13 kcal/d, P = 0.0004) and SEE (89 ± 14 kcal/d, P < 0.0001) and decreased RQ (−0.111 ± 0.003, P < 0.0001). EEDLWincreased by 151 ± 63 kcal/d (P = 0.03). Body fat loss slowed during the KD and coincided with increased protein utilization and loss of fat-free mass.
Conclusion: The isocaloric KD was not accompanied by increased body fat loss but was associated with relatively small increases in EE that were near the limits of detection with the use of state-of-the-art technology
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