Western pattern diet

TheWestern pattern dietis a modern dietary pattern that is generally characterized by high intakes ofpre-packaged foods,refined grains,red meat,processed meat,high-sugar drinks,candyand sweets,fried foods, industrially produced animal products,butterand other high-fatdairy products,eggs,potatoes,corn(andhigh-fructose corn syrup), and low intakes offruits,vegetables,whole grains, pasture-raised animal products,fish,nuts, andseeds.
Dietary pattern analysis focuses on overall diets (such as theMediterranean diet) rather than individual foods or nutrients.Compared to the "prudent pattern diet", which has higher proportions of "fruit, vegetables, whole grains, and poultry", the Western pattern diet is associated with higher risks ofcardiovascular diseaseandobesity.
This diet is "rich inred meat, dairy products, processed and artificially sweetened foods, and salt, with minimal intake of fruits, vegetables, fish, legumes, and whole grains."Various foods and food processing procedures that had been introduced during the Neolithic and Industrial Periods had fundamentally altered 7 nutritional characteristics of ancestral hominin diets:glycemic load,fatty acidcomposition,macronutrientcomposition,micronutrientdensity,acid-base balance,sodium-potassiumratio, andfibercontent.
In 2006 the typical American diet was about 2,200 kilocalories (9,200 kJ) per day, with 50% of calories fromcarbohydrates, 15%protein, and 35%fat.These macronutrient intakes fall within theAcceptable Macronutrient Distribution Ranges(AMDR) for adults identified by the Food and Nutrition Board of the United StatesInstitute of Medicineas "associated with reduced risk of chronic diseases while providing adequate intakes of essential nutrients," which are 45–65% carbohydrate, 10–35% protein, and 20–35% fat as a percentage of total energy.However, the nutritional quality of the specific foods comprising those macronutrients is often poor, as with the "Western" pattern discussed above.Complex carbohydratessuch asstarchare believed to be more healthy thansugar, which is frequently consumed in the Standard American Diet.
The energy-density of a typical Western pattern diet has continuously increased over time. USDA research conducted in the mid 2010s suggests that the average intake of American adults is at least 2,390 kcal (10,000 kJ)per day. Researchers that used different data collection/analysis methods have predicted that the average was about 3,680 kcal (15,400 kJ) per day.By contrast, a healthy daily intake is much lower. Since American adults usually havesedentary lifestylesguidelines suggest 1,600–2,000 kcal (6,700–8,400 kJ) is appropriate for most women and 2,000–2,600 kcal (8,400–10,900 kJ) is appropriate for men with the samephysical activity level.
A review of eating habits in the United States in 2004 found that about 75% of restaurant meals were fromfast-food restaurants. Nearly half of the meals ordered from a menu werehamburgers,French fries, orpoultry— and about one third of orders included asoft drink.From 1970 to 2008, the per capita consumption of calories increased by nearly 25% in the United States and about 10% of all calories were fromhigh-fructose corn syrup.
Americans consume more than 13% of their daily calories in the form ofadded sugars. Beverages such as flavored water, soft drinks, and sweetened caffeinated beverages make up 47% of these added sugars.
Americans ages 1 and above consume significantly more added sugars, oils, saturated fats, and sodium than recommended in the dietary guidelines outlined by the Office of Disease Prevention and Health Promotion. 89% of Americans consume more sodium than recommended. Additionally, excessive consumption of oils, saturated fats, and added sugars is seen in 72%, 71%, and 70% of the American population, respectively.
Consumers began turning tomargarinedue to concerns over the high levels ofsaturated fatsfound in butter. By 1958, margarine had become more commonly consumed than butter, with the average American consuming 8.9 pounds (4 kg) of margarine per year.Margarine is produced by refining vegetable oils, a process that introduces transelaidic acidnot found naturally in food.The consumption of trans fatty acids such as trans elaidic acid has been linked tocardiovascular disease.By 2005, margarine consumption had fallen below butter consumption due to the risks associated with trans fat intake.
Vegetable consumption is low among Americans, with only 13% of the population consuming the recommended amounts. Boys ages 9 to 13 and girls ages 14 to 18 consume the lowest amounts of vegetables relative to the general population.Potatoesandtomatoes, which are key components of many meals, account for 39% of the vegetables consumed by Americans. 60% of vegetables are consumed individually, 30% are included as part of a dish, and 10% are found in sauces.
Whole grains should consist of over half of total grain consumption, and refined grains should not exceed half of total grain consumption. However, 85.3% of the cereals eaten by Americans are produced withrefined grains, where the germ and bran are removed.Grain refining increases shelf life and softens breads and pastries; however, the process of refining decreases its nutritional quality.
The transition into a more westernised diet has several implications, particularly regarding the exportation of foods. As populations become more affluent, reflected in a growing GDP, they have more disposable income to purchase food from other countries, which facilitates this dietary transition. This has been observed in many developing nations. In low and middle income countries, this transition is rapid, and this is observed in countries such as Brazil, India, and South Africa. Westernised diets contribute to increasinggreenhouse gas emissions. This occurs due to the large global supply chains that food production is a part of. Large areas in Latin America and South-East Asia dedicate a large proportion of their land towardsagricultureandforestry, which then gets exported to other countries. This growing use of exports is driving greenhouse gas emissions.
Changing global diets also increase emissions. Increasing per capita incomes leads tourbanisationof a population. When this occurs, populations substitute a low-calorie and vegetable intense diet for more energy-intensive products that are characterised by increase in meat and refined fats, oils and sugar consumption. Once a nation reaches a certain point in development, diet can become the main driver for emissions, particularly when it is focused on a westernised diet.
Based on preliminary epidemiological studies, compared to ahealthy diet, the Western pattern diet is positively correlated with an elevated incidence ofobesity,death from heart disease, cancer (especiallycolon cancer),and other "Western pattern diet"-related diseases.It increases the risk ofmetabolic syndromeand may have a negative impact on cardio-metabolic health.
A Western pattern diet has been associated withCrohn's disease.Crohn's disease has its effects on thesymbiotic bacteriawithin the human gut that show a positive correlation with a Western pattern diet.Symptoms can range from abdominal pain to diarrhea and fever.
A Western pattern diet is associated with an increased risk ofobesity.There is a positive correlation between a Western pattern diet and several plasmabiomarkersthat may be mediators of obesity, such asHDL cholesterol, high levels of fastinginsulin, andleptin.Meta-analyses have also shown that, compared to a healthy diet, a Western pattern diet is linked to increased weight gain among femalesand  adolescents.
Several studies have shown that there is a positive correlation between adoption of a Western pattern diet and incidence oftype 2 diabetesamong both menand women.
The Western pattern diet has been generally linked to increased risk forcolorectal cancer.Meta-analyses have found thatdietpatterns consistent with those of the Western pattern diet are positively correlated with risk forprostate cancer.Greater adherence to a Western pattern diet was also found to increase the overall risk of mortality due to cancer.
No significant relation has been established between the Western pattern diet andbreast cancer.
In recent years, diets in developing countries such asMexico,South Africa, andIndiahave transitioned to adopt more elements of the western-style diet. Overall dietary consumption in these regions now reflects a higher balance of processed sugars and fats over lower-calorie food groups like vegetables and starches.In accordance with this pattern, the western-versus-eastern dichotomy has become less relevant as such a diet is no longer "foreign" to any global region (just as traditional East Asian cuisine is no longer "foreign" to the west), but the term is still a well-understood shorthand in medical literature, regardless of where the diet is found. Other dietary patterns described in the medical research include "drinker" and "meat-eater" patterns.Because of the variability in diets, individuals are usually classified not as simply "following" or "not following" a given diet, but instead by ranking them according to how closely their diets line up with each pattern in turn. The researchers then compare the outcomes between the group that most closely follows a given pattern to the group that least closely follows a given pattern.
The Western diet present in today's world is a consequence of theNeolithic RevolutionandIndustrial Revolutions.The Neolithic Revolution introduced the staple foods of the western diet, including domesticated meats, sugar, alcohol, salt, cereal grains, and dairy products.The modern Western diet emerged after the Industrial Revolution, which introduced new methods of food processing including the addition of cereals, refined sugars, and refined vegetable oils to the Western diet, and also increased the fat content of domesticated meats.  More recently, food processors began replacing sugar withhigh-fructose corn syrup.