Related to the attempt to improve food availability, safety, digestibility, transportability, and storage life.
In the late 20th century, manufacturers of food products had goals to modify food by reducing fat, augmenting flavor, improving consistency, improving shelf life, and shifted to using the cheapest available ingredients which were increases in refined wheat, corn, rice, flour, and to lesser extent added sugars and fats accounting for most of the approximately 500 cal increases in energy consume per person in the US between 1970 and 2000.
Additionally, to mask the use of lower quality ingredients, reduce fat and enhance shelf life new industrial sweeteners, flavorings, colorants, emulsifiers, thickeners, preservatives, processes, such as partial hydrogenation, fractionization, hydrolysis, and excyrusion took place.
The availability of processed food has been associated with rising chronic diseases, including cancer.
Ultraprocessed foods is the most extreme category of food classification, made mostly or entirely from substances derived from foods and additives, with the little if any whole food.
Ultraprocess foods are often grouped using the NOVA food classification system, which divides foods into four groups ranging for unprocessed or minimally process at one and to ultra processed at the other.
People in the US aged one year or older consume an average of 55% of their calories from ultraprocessed foods, and for youth aged 1 to 18 years, ultraprocessed foods make up about 62% of their diets.
Ultraprocessed foods are ready to eat or ready to heat industrial formulations made mainly with ingredients refined or extracted from foods and contain additives but little to no whole foods.
Ultraprocessed foods contain substances of no culinary use and can include chemicals or additives to enhance the products appearance, flavor, or texture.
Most ultraprocessed foods are caloriedense and high in saturated fat, added sugars, and sodium.
Industrial produced ultraprocessed foods use modern technology to create visually appealing and hyperpalatable products extracted from food, such as casein and whey; substance derived from food constituents through further processing such as soy protein isolates and malodextrin; and non-culinary additives such as flavor enhancers and emulsifiers.
A loss of natural food structure, alters the speed, location, and completeness of nutritional absorption, and affects the host and the microbiome.
Industrial processing can disrupt the cellular structure of foods, often by removing fiber, resulting in products that are rapidly absorbed in the G.I. tract and can cause glucose and insulin levels to spike immediately after a meal, followed by a sharp drop that can trigger feelings of hunger.
Ultraprocessed foods may contain toxins such as furans, heterocyclic amines, polycyclic aromatic hydrocarbons, and acrylamide may be introduced during processing and packaging, which can be a source of contaminants such as, bisphenols,mineral oils, and microplastics.
The aggressive marketing of ultraprocessed foods with packaging for immediate consumption or ready to eat containers and sold in large portion sizes contributes to excessive consumption.
Ultraprocessed foods are typically high in added sugar, trans fats, sodium, refined starch and low end fiber, proteins, vitamins, and minerals.
Studies indicate consistent evidence suggesting that high intake of ultraprocessed food contributes to obesity and cardiometabolic risk factors in children and adults, and is associated with increased risk of cardiovascular diseases, hypertension, dyslipidemia, certain types of cancers, inflammatory bowel disease, diabetes and total mortality in adults.
Food manufacturers have developed food products engineered to stimulate the brains neural pathways related to pleasure and reinforcement, trigger cravings, and cultivate brand loyalty.
The estimated proportion of energy intake for the consumption of ultraprocessed foods is increasing among US youths and comprise the majority of their total energy intake.
Tertiary processed food, is food that is commercially prepared generally through processing, to optimize ease of consumption.
Described as foods that have been created to make them more appealing to the consumer.
Processed foods designated as convenience foods are often sold as hot, ready-to-eat dishes,as room-temperature, shelf-stable products, or as refrigerated or frozen food products that require minimal preparation.
It may also be easily portable, have a long shelf life, or offer a combination of such convenient traits.
Processed food is any food that is subjected to mechanical, chemical, or heat-based processing to change its characteristics.
- All cooked food is processed food
- All baked food is processed food
- All boiled food is processed food
- All pickled food is processed food
- All diced or chopped food is processed food (hence why automated food slicing machines are called food processors)
- All canned or bottled food is processed food
- All blended food is processed food
- All whipped or churned food is processed food
- All smoked food is processed food
- All steamed food is processed food
- All dried food is processed food
Such convenience foods include ready-to-eat dry products, frozen foods such as TV dinners, shelf-stable foods, prepared mixes such as cake mix, and snack foods.
Types of convenience foods can vary by country and geographic region.
Ultraprocessed foods are rich in energy and potentially unhealthy elements.
High levels of food processing can make nutrients more accessible and reduce satiety.
Ultraprocessed foods replace healthy, nutritious, fresh foods, depriving individuals of the benefits derived from a high-quality food pattern mainly based in non-processed or minimally processed foods, such as a Mediterranean diet.
Ultraprocessed food is strongly associated with higher rates of obesity.
High ultra processed food intake is associated with increased risk of early onset colorectal adenoma.
Early onset colorectal cancer incidence is increasing globally, in parallel with increased consumption of ultra processed foods.
The combination of ingredients, additives, and textures in unprocessed foods that are uncommon in whole foods can accelerate eating rates, enhance palatability, and influence reward related brain activity leading to obesity.
Artificial flavors in ultraprocessed foods may disrupt evolved nutrient flavor associations by providing tastes such as unami without the associated protein.
The consumption of highly processed foods promotes dopamine release in the nucleus accumbens, which is central to reward and addiction related behavior.
British Medical Journal study found that an estimated 14% of adults and 12% of children are addicted to ultra-processed foods that include refined sugar and fats: Fatty and sugar-rich foods are as addictive as nicotine and cocaine and even more so than heroin.
The current pandemic of obesity was preceded by increases in the production and consumption of ultraprocessed foods, with an estimate of a threefold increase in their consumption in some western countries in recent decades.
Such food is usually ready to eat without further preparation.
Such convenience foods include ready-to-eat dry products, frozen foods such as TV dinners, shelf-stable foods, prepared mixes such as cake mix, and snack foods.
Convenience foods can include: candy, beverages such as soft drinks, juices and milk; nuts, fruits and vegetables in fresh or preserved states,processed meats and cheeses, canned products such as soups and pasta dishes, frozen pizza, chips, such as potato chips, pretzels, and cookies.
Types of convenience foods can vary by country and geographic region.
Convenience food is commercially prepared for ease of consumption.
Hyperpalatable foods associated with binge eating tend to be highly processed and high in sugars and fats.
Ultraprocessed foods often have a higher content of total fat, saturated fat, added sugars, and salt, along with a lower amount of fiber and low vitamin density.
With highly processed foods less starch reaches the large intestine and more energy is absorbed by the body, and this shift in energy delivery due to eating more processed foods may be contributing factors to the development of metabolic disorders of modern life, including obesity and diabetes.
In the Spanish study and increased intake of ultraprocessed food was associated with the higher mortality of the 7.7 years of follow up.
In a Brazil study a 11% cardiovascular mortality reduction was estimated if ultraprocessed foods were reduced by 50% and substituted with unprocessed or minimally processed foods, plus an additional 50% reduction in processed culinary ingredients.
Ultraprocessed foods have a high energy density that is less satiating, highly accessible, and prone to causing over consumption, which is associated with mortality.
Industrial ultraprocessed foods contain high quantities of saturated fatty acids, transfer fatty acids, hydrogenated oils, starches, free sugars, salt, food additives used to imitate the sensory qualities of natural foods, or to disguise undesirable qualities of the final product, such as colorants, flavorings, artificial sweeteners, and emulsifiers.
Trans fatty acid intake is related to an increase in all-cause mortality rates in several populations as has total sugar intake.
Consumption of ultraprocessed foods is associated with poor diet quality with less consumption of fiber, fruit, and vegetables, and unhealthy lifestyle with smoking and sedentary behaviors which all contribute to increased mortality.
Ultraprocessed foods can contain contaminants derived from physical, chemical, and biological processes, along with substances from packaging and additives.
Ultraprocessed food consumption is associated with poor diet quality.
Ultraprocessed foods are highly palatable, and habit-forming.
Ultraprocessed foods are convenient, microbiologically safe, and affordable.
Ultraprocessed foods are increasing and presently accounts for 25-50% of total food energy intake.
Ultraprocessed foods are made from food constituents but without any identifiable intact food.
Ultraprocessed food is associated with obesity, weight gain, cancer, and cardiovascular disease.
Children, adolescents and adults who consume more ultra processed foods have greater fat mass, waist circumference, body mass index, overweight, and obesity.
Harms of ultraprocessed foods include: food matrix disruption, excess starch, sugar and salt, effects of additives, industrial toxins, or packaging contaminants, and displacement of more heathful foods.
Some ultraprocessed foods such as those rich in whole grains, yogurts, seafood-may have neutral or even positive health effects.
Ultraprocessed foods represent nearly 60% of calories in US adults and 70% in children and healthier products are uncommon and generally chosen by those who are fortunate to have sufficient nutritional knowledge.
Ultraprocessed foods are adversely associated with obesity, cardiovascular risk factors, poor cardiovascular outcomes, inflammatory, bowel disease, depression, and all cause mortality in adults, abnormal, blood, lipids, and obesity in children, and gestational weight gain and blood glucose in pregnancy.
A higher consumption of ultraprocessed foods is independently associated with higher all-cause mortality in an eight year follow up study.
When ultraprocessed foods provide more than one of every 3 calories, it is associated with a relative increase in total mortality of 44% compared with individuals in which ultraprocessed foods provide only one of every 7 calories.
Identifiable agents added to ultraprocessed foods includes chemicals, stabilizing substances, flavoring agents, and other additives that imitate the sensory qualities of food.
Ultraprocessed foods are heavily loaded with freesugars, fats, salt, synthetic antioxidants, preservatives and other chemicals.
Ultraprocessed foods include: sugar-sweetened beverages, sugar milk, fruit drinks,, fast food, cookies, candies, sweets, and savory package snacks.
Ultraprocessed foods are operationally distinguishable from processed foods by the presence of food substances of no culinary use with varieties of sugars such as fructose, high-fructose corn syrup, fruit juice concentrates, invert sugar, maltodextrin, dextrose and lactose; modified starches; modified oils such as hydrogenated or interesterified oils; and protein sources such as hydrolysed proteins, soya protein isolate, gluten, casein, whey protein and mechanically separated meat or of additives with cosmetic functions (flavors, flavor enhancers, colors, emulsifiers, emulsifying salts, sweeteners, thickeners and anti-foaming, bulking, carbonating, foaming, gelling and glazing agents in their list of ingredients.
Industrially produced foods, such as snacks, chips, convenience foods, carbonated drinks, increase the risk of death, especially from cardiovascular causes.
Industrial processed foods are generally low in essential nutrients, high in sugar, oil and salt and liable to be overconsumed.
The study of over twenty-two thousand participating in the Moli-sani Project:
those consuming a high amount of ultraprocessed foods had an increased risk of death from any cause of 26%, and of 58% specifically from cardiovascular diseases.
Ultraprocessed food now accounts for about 2/3 of all calories consumed in the United States.
Excess sugar accounts only for 40% of the increased death risk.
Dietary shifting is expected to increase the risk for chronic diseases.
Ultraprocessed foods found to be related to obesity.
There is the positive relationship between ultraprocessed food intake and the risk of mortality.
Positive associations have been found between fast food and sugar-sweetened and beverage consumption and mortality.
A meta-analysis showed a non-linear 7% higher risk with an increased intake of sugar-sweetened beverages up to 250 milliliters per deciliter.
Increased mortality has been shown with meat and processed meats.
The high sodium content of processed meats is likely to increase the risk of CHD by increasing blood pressure and vascular resistance.
Prospective study demonstrated neutral association between milk and dairy products and mortality without a distinction between process and ultraprocessed foods.
In most developed countries, 80% of consumed salt comes from industry-prepared food, 5% come from natural salt, 15% comes from salt added during cooking or eating.
A single serving of many convenience foods contains a significant portion of the recommended daily allowance of sodium.
Some popular packaged foods depend on significant amounts of salt for their palatability.