Lupine Publishers | Scholarly Journal of Food and Nutrition
Abstract
A
person’s diet choice is related not only to their biological needs and the
availability to the foods, but also to the customs, aspirations, and
expectations of their societies. The quantity and quality of the food consumed,
the choice of them, and the cultural gastronomies surrounding eating habits
have varied throughout history and culture. Moreover, there are consumers that
need special requirements for their nutrition to prevent or control diseases.
In this context the consumers could be classified as -common or conservative
consumers, -conservative consumers with special regimes due to age, cultural,
or religious conditions, (which include infants, vegetarians and vegans,
sports, old age among others), and consumers with physiological and metabolic disorders
that are controlled or prevented with special food regimes as well.
In
regards to this classification that involve the concept of preventive medicine,
it is imperative to select the appropriate food in the diet in order to prevent
or control diseases that shall help the progress of the food safety.
Hippocrates of Cos (5th century BC - 4th century BC,) was already prematurely
involved with the idea of preventive medicine. He postulated “Let food be your
best medicine and your best medicine be your food. “It was the first idea
conceived regarding special diet regimes; as consequence of observing the
environmental causes of illness, emphasizing not only diet, but also general
aspects of the patient’s life and how this Influences their health and convalescence.
Joint WHO/NHD in 2016 throughout of the food standards program Codex committee
on nutrition and foods for special regimes, have postulated the 5 keys to a
healthy diet: Breastfeed babies and young children, eat a variety of foods, eat
plenty of vegetables and fruit, eat moderate amounts of fats and oils and eat
less salt and sugars. At that context, adequate choice of foods in the diet
could be the solution of the future health of any type of consumer, but there
are few contributions to this area by food industry. Few or nothing prepared
foods are offered for this market, to fill the kind of food they are needing.
The article will deal with all of these concepts and will review the
perceptions of the theme in literature.
Introduction
The
people’s diet choice is related not only to their biological needs and the
availability to the foods, but also to the customs, aspirations, and
expectations of their societies. The quantity and quality of the food consumed,
the choice of them, and the cultural gastronomies surrounding eating habits
have varied throughout history and culture. At present, people from developed
countries consume more food for pleasure and social activities than out of
necessity which consequent obesity that leads them to chronic diseases. At this
context the relation of the preventive medicine with nutrition results in a
good panacea. The role of food in the prevention of diseases has been
established since ancient times [1]. A Consumer must be a person, which knows
what eating is and the effects of the components of food in his or her health.
As consumers they must participate searching, selecting, and using the healthy
food and refusing the non-adequate food products. Besides, consumers must know
who they are in regards to their classifications of their consumer’s types. The
goal of the paper is to discuss the classification of consumers and foods for
special diet regimes in an overview.
Special Regimes Diet Overview
The
role of food in the prevention of diseases has been established since ancient
times; Let it recall the aphorism of Hippocrates of Cos (Greece, 5th century BC
- 4th century BC), considered the father of modern medicine: “Let food be your
best medicine and your best medicine be your food.” [1]. At that time,
Hippocrates was already prematurely involved with the idea of the preventive
medicine. It was the first idea conceived of special diet regimes; as a
consequence of observing the environmental causes of illness, emphasizing not
only diet, but also general aspects of the patient’s life and how this
Influences their health and convalescence [2]. In that context, adequate
choices of foods in the diet could be the solution of the future health of any
type of consumer. Joint WHO/NHD in 2016 [3] through the food standards program
Codex committee on nutrition and foods for special regimes, have postulated the
5 keys to a healthy diet.
Breastfeed Babies and Young Children: From birth to 6
months of age, feed babies exclusively with breast milk (i.e. give them no
other food or drink) and feed them “on demand” (i.e. as often as they want, day
and night). -At 6 months of age, introduce a variety of safe and nutritious
foods to complement breastfeeding, and continue to breastfeed until babies are
2 years of age or beyond. -Do not add salt or sugars to foods for babies and
young children
Why?
On
its own, breast milk provides all the nutrients and fluids that babies need for
their first 6 months of healthy growth and development. Exclusively breastfed
babies have better resistance against common childhood illnesses such as
diarrheic, respiratory infections and ear infections. In later life, those who
were breastfed as infants are less likely to become overweight or obese, or to
suffer from Non-Communicable Diseases (NCDs), such as diabetes, heart disease
and stroke.
Eat a Variety of Foods: Eat a combination
of different foods, including staple foods (e.g. cereals such as wheat, barley,
rye, maize or rice, or starchy tubers or roots such as potato, yam, taro or
cassava), legumes (e.g. lentils, beans), vegetables, fruit and foods from
animal sources (e.g. meat, fish, eggs and milk) Why? Eating a variety of whole
(i.e. unprocessed) and fresh foods every day helps children and adults to
obtain the right amounts of essential nutrients. It also helps them to avoid a
diet that is high in sugars, fats and salt, which can lead to unhealthy weight
gain (i.e. overweight and obesity) and no-communicable diseases (NCDs)
diseases. Eating a healthy, balanced diet is especially important for young
children’s and development; it also helps older people to have healthier and
more active lives.
Eat Plenty of Vegetables and Fruit: Eat a wide
variety of vegetables and fruit for snacks, choose raw vegetables and fresh
fruit, rather than foods that are high in sugars, fats or salt. -Avoid
overcooking vegetables and fruit as this can lead to the loss of important
vitamins. -When using canned or dried vegetables and fruit, choose varieties
without added salt and sugars. Why? Vegetables and fruit are important sources
of vitamins, minerals, dietary fiber, plant protein and antioxidants. People
whose diets are rich in vegetables and fruit have a significantly lower risk of
obesity, heart disease, stroke, diabetes and certain types of cancer.
Eat Moderate Amounts of Fats and Oils: Use unsaturated
vegetable oils (e.g. olive, soy, sunflower or corn oil) rather than animal fats
or oils high in saturated fats (e.g. butter, ghee, lard, coconut and palm oil).
Choose white meat (e.g. poultry) and fish, which are generally low in fats, in
preference to red meat. Eat only limited amounts of processed meats because
these are high in fat and salt. Where possible, opt for low-fat or reduced ‘fat
versions of milk and dairy products -Avoid processed, baked and fried foods
that contain industrially produced trans-fat Why? Fats and oils are
concentrated sources of energy, and eating too much fat, particularly the wrong
kinds of fat, can be harmful to health. For example, people who eat too much
saturated fat and trans-fat are at higher risk of heart disease and stroke.
Trans-fat may occur naturally in certain meat and milk products, but the
industrially produced trans-fat (e.g. partially hydrogenated oils) present in
various processed foods is the main source.
Eat Less Salt and Sugars: When cooking and
preparing foods, limit the amount of salt and high-sodium condiments (e.g. soy
sauce and fish sauce). Avoid foods (e.g. snacks), that are high in salt and
sugars. Limit intake of soft drinks or soda and other drinks that are high in
sugars (e.g. fruit juices, cordials and syrups, flavored milks and yogurt
drinks). Choose fresh fruits instead of sweet snacks such as cookies, cakes and
chocolate. Why? People whose diets are high in sodium (including salt) have a
greater risk of high blood pressure, which can increase their risk of heart
disease and stroke. Similarly, those whose diets are high in sugars have a
greater risk of becoming overweight or obese, and an increased risk of tooth
decay. People who reduce the amount of sugars in their diet may also reduce
their risk of noncommunicable diseases such as heart disease and stroke. The
diet choices of people are related not only with their biological needs and the
availability of the foods, but also with the customs, aspirations, and
expectations of their societies. The quantity and quality of the food consumed,
the choices of them, and the cultural gastronomies surrounding eating have
varied though history and culture. Nevertheless, the major influence on the
daily diet has been the availability of food. Humans can survive only a few
days without water and, while the average healthy person can stay alive for
weeks or even months without food, this will have adverse effects and cause
health problems.
Classification of Consumers
Go to
With
technological advances in the food processing and its advertising, consumers
have wide eating food choices that could be sometime non-nutritive, and that
are affecting their health. Despite of these developments, there are not much
healthy choices or specific foods for special requirements. In this context,
regarding food security and commercial issues, two categories of consumers must
be noted:
Conventional consumers
This
categorization is subdivided in: Common and conservatives without special
diets.
Consumers with special diets regimes
This
category is subdivided in: Conservatives with special diets regimes due to age,
cultural or religious conditions. Consumers with special diets regimes, which
control or prevent him/her illness [4].
Common and Conservative Consumers: Definition and Description
Go to
i.
Common consumers are those people whose diets are related to their biological
needs and availability of the foods, but also in some occasions depends of the
customs, aspirations, and expectations of their societies. They usually do not
select their food diets, and consequently through time, they might be a
candidate for the special diets regime.
ii.
Conservative consumers Contrarily, the conservative consumers can be defined as
those that choose different varieties of conventional, healthy or organic
foods. This kind of consumer is a regular reader of any healthy information
advertised, labels the food him/her consumes, and considers relevant
information regarding their diets before ingesting the foods.
Consumers with Special Diets Regimes. Definition and Description
Go to
The
close relationship between health and food is now been recognized. Foods are
being modified by reducing, eliminating or adding nutrients in order to avoid
deficiencies and prevent harmful excesses. At the context two important
definitions involved that are: Food for Special Dietary uses and
Noncommunicable Diseases (NCDs).
Foods for Special Dietary Uses
The
definition of foods for special dietary uses has been restricted to foods that
a)
Furnish a particular dietary requirement that exists because of a physical or
physiological condition, such as convalescence, pregnancy, lactation, infancy,
and specific diseases and disorders
b)
Supply a vitamin, mineral, or other dietary property to supplement the diet by
increasing total dietary intake c) Meet a special dietary need when such foods
are the sole item of the daily diet (21 Code of Federal Regulations Part, 1974,
cited by Chopra, 1976 [5], Code of Federal Regulation, 1999 cited in [6]).
However, the term food for Special Regimes has been wide defined from CODEX
STAN 146-2009 [4]. As diets in which processed or specially prepared foods are
required to meet particular dietary needs, as determined by particular physical
or physiological conditions and / or specific diseases or disorders presented
as such. The composition of such foods should be fundamentally different from
the composition of ordinary foods of a similar nature, should such foods exist.
Consumers with Special Diets Regimes due to Age, Cultural or
Religious Condition
This
categorization includes the infants, vegetarians and vegans, athletes, and old
age consumers among others.
Infants: Feeding of infants is of vital
importance, because it involves the healthy physiological growth of the child
[7,8]. In this framework, it is important to emphasize the value of breast milk
as an ideal food for the child during the first six months of life [9- 12].
According to Ballard and Morrow, 2013 [13], lactation has two stages: colostrum
production and production of transitional and mature milk.
a)
Colostrum. The first fluid produced by mothers after delivery is colostrum,
which is distinct in volume, appearance and composition. Colostrum, produced in
low quantities in the first few days postpartum, is rich in immunologic
components such as secretory IgA, lactoferrin, leukocytes, as well as
developmental factors such as epidermal growth factor. Colostrum also contains
relatively low concentrations of lactose, indicating its primary functions to
be immunologic and trophic rather than nutritional. Levels of sodium, chloride
and magnesium are higher and levels of potassium and calcium are lower in
colostrum than later milk. As tight junction closure occurs in the mammary
epithelium, the sodium to potassium ratio declines and lactose concentration
increases, indicating secretory activation and the production of transitional
milk. The timing of secretory activation (lactogenesis stage II) varies among
women, but typically occurs over the first few days postpartum. Delayed onset
of lactogenesis is defined as onset >72 hours after delivery and appears to
occur more often with preterm delivery and maternal obesity, and may be
predicted by markers of metabolic health [7,8]. Biochemical markers in early
milk for onset of secretory activation include its sodium content, the sodium
to potassium ratio, citrate, and lactose.
b)
Transitional milk shares some of the characteristics of colostrum but
represents a period of “ramped up” milk production to support the nutritional
and developmental needs of the rapidly growing infant, and typically occurs
from 5 days to two weeks postpartum, after which milk is considered largely
mature. By four to six weeks postpartum, human milk is considered fully mature.
In contrast to the dramatic shift in composition observed in the first month of
life, human milk remains relatively similar in composition, although subtle
changes in milk composition do occur over the course of lactation.
c)
Mature Milk. Mature milk begins to appear near the end of the second week after
childbirth. It is produced in great volume as transitional milk but is thinner
and waterier or even bluish; sometimes it’s described as looking like skim milk
when it is first secreted, until the fat is released later in the feeding and
it becomes creamier.
As
general definition breast milk is an aqueous suspension of nutrients, cells,
hormones, growth, immunoglobulins, enzymes, etc., which exert a complex
interrelation between the mother and her baby. Human milk contains hundreds to
thousands of distinct bioactive molecules that protect infants against
infection and inflammation and contribute to their immune maturation, organ
development, and healthy microbial colonization. Some of these molecules, e.g.,
lactoferrin, are being investigated as novel therapeutic agents. A dynamic,
bioactive fluid, human milk changes in composition from colostrum to late
lactation, and varies within feeds, diurnally, and between mothers [13]. The nutritional
status of the mother seems to influence the concentration of fat and therefore
the energy content of the breast milk, as well as its composition of fatty
acids and immunological properties. It has been found that the composition of
human milk varies between different parts of the world, and even more varies
among women living in the same locality and changes dramatically during the
first few days after delivery; As well as changes in the secretion of colostrum
into milk. The concentration of certain components of milk, especially fat,
varies substantially during one feeding and during the day [14]. Milk
composition appears to be dependent on parity and age of the mother [13-20].
Beside
the hundreds to thousands of distinct bioactive molecules present, human milk
contains 3% - 5% fat, 0.8% - 0.9% protein, 6.9% - 7.2% carbohydrate calculated
as lactose, and 0.2% mineral constituents expressed as ash. Its energy content
is 60-75 kcal/100 ml. Protein content is markedly higher and carbohydrate
content lower in colostrum than in mature milk. Fat content does not vary
consistently during lactation but exhibits large diurnal variations and
increases during the course of each nursing [21].Water is the most abundant
component, contributing to the mechanism of regulation of new-born body
temperature [22]. In women who breastfeed water consumption is increased and
regulated by thirst (it is not clinically important to insist that the mother
drink more water than she needs). It has been shown that the needs of infants
in a warm climate can be fully satisfied by the water of breast milk.
There
are two classes of protein in breast milk: Casein and whey. Casein becomes
clots or curds in the stomach; while whey remains as a liquid and is easier to
digest. Depending on the stage of milk, 80% to 50% of protein in breast milk is
whey [23]. The most abundant proteins are casein, α-lactalbumin, lactoferrin,
secretory immunoglobulin IgA, lysozyme, and serum albumin. Non-protein
nitrogen-containing compounds, including urea, uric acid, creatine, creatinine,
amino acids, and nucleotides, comprise ~25% of human milk nitrogen [13]. The
casein content (mg/ml) of mature human milk was reported by Lönnerdal and
Forsum, 1985 (24) varying from 1,80 to 2,96 measured by three different methods
with trace elements and minerals of total Ca 10%, Mg 5%, Zn 28%, Cu 17%, and Fe
27% are bounded to casein. The essential amino acid pattern of human milk
closely resembles that found to be optimal for human infants [21]. Since the
protein ratio of human milk is considered a guideline when manufacturing infant
formulas, these findings should be considered with regard to infant nutrition
[24]. About 25% of the total nitrogen of human milk represents nonprotein
compounds including urea, uric acid, creatine, creatinine, and a large number
of amino acids. Of the latter, glutamic acid and taurine are prominent [21].
The
principal sugar of human milk is the disaccharide lactose but 30 or more
oligosaccharides are present in low concentration, in human milk, depending on
stage of lactation and maternal genetic factors; colostrum has high
concentration of it. Some of them may function to control intestinal flora
because of their ability to promote growth of certain strains of lactobacilli
[13,21,23]. The main lipid fraction in human milk is triglycerides, which
account for about 95% of total lipids. The human milk fat is characterized by
high contents of palmitic and oleic acids. Near half of milk fatty acids are
saturated fatty acids (23% palmitic acid (C16:0) in total fatty acids), with
the monounsaturated fatty acid; oleic acid (18:1w9), in the highest percentage
(36%) in human milk. Human breast milk also contains two essential fatty acids,
linoleic acid (C18:2w6) at 15% and alpha-linolenic acid (C18:3w3) at 0.35%.
These two essential fatty acids are, respectively, converted to arachidonic
acid (AA, C20:4w6) and eicosapentaenoic acid (EPA, C20:5w3), the latter of
which is further converted to docosahexaenoic acid (DHA, 22:6w3). AA, EPA and
DHA are important for regulating growth, inflammatory responses, immune
function, vision, cognitive development and motor systems in new-born [23,24].
Fatty
acid composition of milk varies with mother diet, particularly the fatty acids
which it supplies. Phospholipids include phosphatidyl ethanolamine,
phosphatidyl choline, phosphatidyl serine, phosphatidyl inositol, and
sphingomyelin [13]. Transvaccenic acid (VA) is also the predominant fatty acid
comprising trans-fat in human milk [25,26]. VA is the only known dietary precursor
of c9,t11 conjugated linoleic acid (CLA), but recent data suggest that
consumption of this trans-fat may impart health benefits beyond those
associated with CLA [27,28]. Human milk provides the normative standard for
infant nutrition. Nevertheless, many micronutrients vary in human milk
depending on maternal diet and body stores including vitamins A, B1, B2, B6,
B12, D, and iodine [23]. The major mineral constituents of human milk are Na,
K, Ca, Mg, P, and Cl and its contents could vary considerably. All of the
vitamins, except K, are found in human milk in nutritionally significant
concentrations [13,21,23].
d)
Human vs Animal Milk. Animal milk is a product of the evolution designed for
the nutrition of the mammals [9]. Animal milks are different in composition, in
terms of concentration of macronutrients and micronutrients. The same nutrients
are present in the milk of all species, although in different proportions. Such
quantitative differences appear to be an adaptation to the nutritive
requirements of the young of each species [8,9,27] [29- 32]. Since, the most
usual to drink by the human is the cow’s milk in this section it will be
compared to human milk. The Cow’s milk is different in the types of fatty acids
present and the factors that affect their absorption. it is also important to
highlight the presence of long chain polyunsaturated fatty acids, especially
those with 20 to 22 carbon atoms, because of their importance for the growth
and maturation of the nervous system of the neonate, which are absent in cow’s
milk. Particularly noteworthy are arachidonic (20:4 n6) and docosahexaenoic
(22: 6n3). These fatty acids are also related to visual function and it has
been shown that formula-fed children have less visual acuity than those fed
with breast milk. Human milk is high in cholesterol, its levels decrease in the
first few days and then stabilize [9,13,21].
The
types of proteins present and their relative proportions and qualitative and
quantitative differences in the non-protein nitrogen fraction. Cow milk
contains more protein than does human milk and differ in the amounts of various
proteins they contain. Unlike cow’s milk, human milk is characterized by a
predominance of whey proteins (60-70%) over casein (40-30%). Caseins can form
leathery curds in the stomach and be difficult to digest, being the predominate
β-casein. Human milk does not contain β-lactoglobulin, one of the main proteins
associated with cow milk allergy [33]. There is much less lactose in cow’s
milk, than in breast milk and the oligosaccharide fraction is very different
[13,33].
There
are large differences in the content and rates of absorption of vitamins and
minerals from breast milk compared to cow’s milk or formula’s milk. Vitamin D
and vitamin K are potential problems for the breastfed baby in certain
circumstances. The total salt content of cow’s milk is three times higher than
the human milk. Therefore, the renal load of solutes from cow’s milk is
considerably higher than the breast milk. And it is further increased with the products
of the digestion of the high protein content of cow’s milk. In this way, the
breastfed child handles water more easily for temperature control through sweat
and insensitive loss. One of the most significant points in terms of minerals
in human milk, for example calcium, magnesium, iron, copper, zinc, is its high
bioavailability when compared to cow’s milk or formulas [8].
e)
Human milk and formulas. The response of human milkfed and formula-fed infants
differs with respect to endocrine function, fecal motility, immune function,
and renal function. Infant milk preparations are designed to mimic human milk
as much as possible, but this is unlikely to always be a complete success.
However, there are a number of important differences in composition between
breast milk and formula milk. This includes the types and proportions of fatty
acids present (which may be of importance for development), the nature of the
non-protein nitrogen component (developmental potential is also possible), and
the presence of immunoglobulins and fibronectin to the child against infection)
[8]. However, poor health status and certain social conditions can reduce
lactation by decreasing or avoiding breastfeeding. Under these circumstances,
mother should use alternative foods or infant formulas for feeding the babies.
During the 19th century, reasonably safe breast milk substitutes started to be
developed, that was advanced into modern infant formulas during the 20th
century using human milk composition as reference and cow’s milk as protein
source. Even with a composition similar to human milk there are differences in
performance between formula-fed and breastfed infants. Novel ingredients and
new techniques within the dairy industry will contribute to minimize these
differences and so might techniques in molecular biology allowing large scale
production of recombinant human milk proteins [34].
On
the other hand, pasteurized donor milk is now commonly provided to high risk
infants and most mothers in the U.S. express and freeze their milk at some
point in lactation for future infant feedings. It is important to be aware that
many milk proteins are degraded by heat treatment, and by the effect of the
freeze-thaw cycles. However, proteins may not have the same bioactivity after
undergoing these treatments [13]. This technique may be used as palliative in
critical missing of the fresh human milk or formulas. it will be extremely
important that their safety and efficacy are rigorously evaluated because
‘functional effects’ are not necessarily the same as health benefits.
Vegetarians and Vegans
With
the increasing attention to health nutrition, vegetarianism is it the focus of
several consumers. Neither vegans nor vegetarians eat meat, moreover, there are
varying degrees of vegetarianism, depending on the extent to which animal
product are avoided. Veganism adopted by vegans is the most extreme or pure
form of vegetarianism where all animal product is excluded, and this condition
is considered as lifestyle, they also are excluding inedible animal-based
products, such as leather, wool, and silk. Less strict forms exist, for example
semi-vegetarian (eat chicken), lacto-ovovegetarian, where there is selective
exclusion of meat, fish and poultry, but with the retention of eggs and dairy
products, ovovegetarians and lacto-vegetarians (eat eggs and dairy, product
respectively). A similar form but not excluding fish is called lacto-ovo-pisco
vegetarianism [35], and lastly, it is mentioned the raw veggies consumers that
base their diet on uncooked foods; Consequently, they do not consume foods of
animal origin, nor starches derived from cereals that are only consumed cooked.
According
to Grunert [36], the raw veggies consumers are eating only raw fruits and
vegetables. Its diet is called a raw food diet, living foods diet, or a raw
vegan diet. Going raw, as proponents call it, entails a transition period from
the typical standard American diet of cooked, processed and refined foods
sprinkled with some fruits and vegetables to a diet based entirely on
plant-based products. Such a diet is rich in vitamins, minerals, and fiber, but
may be lacking in certain essential nutrients. The essential beliefs of a raw
food diet include: Eating only foods that have not been heated above 116-118
degrees Fahrenheit. The belief is that heating foods above these temperatures destroys
vital life-giving enzymes. Different raw food coaches set the temperature bar
at different rates, but the range of 116-118 degrees is typical. Eliminating
white sugar, flour, caffeine and alcohol from the diet. Basing the diet
primarily on raw plant foods, such as fruits, vegetables, sea vegetables, nuts,
seeds, and oils. Abstaining from meat and animal products. Some raw food
followers will eat raw meat or unprocessed dairy products, but most believe
these to be detrimental to health and eat only uncooked fruit and vegetable
diets [36].
It
has been postulated that certain illness; such as obesity, noninsulin dependent
Diabetes Mellitus sand coronary artery disease is occurring less in vegetarians
than in omnivores. But not only dietetic pattern is associated to this healthy
advantage of vegetarianism, but it may also reflect upon other factors often
associated to them such as non-smoking, regular exercises, avoidance of alcohol
and caffeine, low fat intake, vitamin and mineral supplementation, increasing
dietary fiber, periodic fasting and other health promoting activities [37].
Vegetarians often choose their diet based on its reported health, ethical,
economic, environmental, cultural, and social concerns or for religious or
political reasons. In general, vegans have much stronger political beliefs
regarding their diet, and also with animal welfare [38].
Athletes or Sports
The
daily intake of energy from food provides the athlete with immediate energy
needs; such as, those for body functions, activity and growth. In addition,
energy intake also influences the body’s energy storage. Energy storage (fat
and glycogen) play a number of important roles related to exercise performance,
since they contribute to the size and physique of the athletes and their
function. Rodriguez et al. [39] and also pointed out that adequate intake of
fat is necessary for numerous metabolic activities that promote optimal health.
For example, vitamins A, D, and E require fat for proper absorption. Fat intake
for an athlete should range between 20-35% of total daily calories. Current
dietary guidelines recommend that 10% of fat intake should come from monounsaturated
sources, 10% from polyunsaturated sources, and no more than 10% from saturated
fat. Research does not show any beneficial effects from a diet that includes
excessive fat intake (>70% of total energy) [39,40].
At
that point, the control and modification of corporal weight should be strictly
controlled, in order to limiting the body fat and to provide a maximum value of
muscle strength (muscular mass), endurance and speed. As consequence, a
well-chosen diet for athletes offers many benefices to them. This diet has to
be adequate, specific and balanced for each sport, in order to provide the
necessary fuel and the best advantageous training. The diet has to also be
adequate for achievement and maintenance of an ideal body weight and physique, good
recovery after sport events, reduction of supplement intake, reduction of risk
injury, overtraining fatigue and illness, confidence for be in good shape,
enjoyment of food and social eating occasions at home and during travel [41].
For
Athletes, the intake of carbohydrates includes both complex and simple sugars.
Carbohydrates maintain blood sugar levels to fuel exercise. They also replenish
glycogen which is the storage form of carbohydrates within muscles. The
recommended daily carbohydrate intake for athletes ranges from 6-10 g/kg body
weight [39,40]. According to the Nutrition Working Group of the International
Olympic Committee, 2010 [41], to choose nutrientrich carbohydrates and to add
other foods to recovery meals and snacks to provide a good source of protein
and other nutrients is quite valuable. These nutrients may assist in other
recovery processes, and in the case of protein, may promote additional glycogen
recovery when carbohydrate intake is below targets or when frequent snacking is
not possible. Carbohydrate-rich foods with a moderate to high Glycaemic Index
(GI) provide a readily available source of carbohydrate for glycogen synthesis
and should be the major fuel choices in recovery meals. Protein plays an
important role in the response to exercise. Amino acids from proteins form
building blocks for the manufacture of new tissue, including muscle, and the
repair of damaged tissue. They are also the building blocks for hormones and
enzymes that regulate metabolism, support the immune system and other body
functions. Protein provides a small source of fuel for the exercising muscle.
Endurance
athletes are advised to ingest between 1.2-1.4 grams of protein per kilogram of
body weight each day. Ultra-endurance athletes who participate in continuous
training for several hours or consecutive days should consume slightly more
protein than this; however, consumption of more than 2 grams of protein per kg
of body weight is not recommended. Strength athletes are encouraged to consume
protein in the range of 1.2-1.7 g/kg body weight. This amount is generally easy
to obtain through a normal diet without the use of supplements. High quality
protein sources such as whey, casein, or soy are equally effective in the
maintenance, repair, and synthesis of muscle proteins [39]. The benefits of
high protein diets that strength athletes have suggest that they are less
likely to develop kidney disease, diabetes, or hypertension based on
preliminary studies [42]. These studies contradict the belief that a high protein
diet will promote risk factors involving kidney disease. These experiments
found that people with existing kidney disease would be negatively affected by
a protein-rich diet while those without preexisting diseases showed only
marginal effects [42]. Adequate intakes of energy, protein, iron, copper,
manganese, magnesium, selenium, sodium, zinc, and Vitamins A, C, E, B6 and B12
are particularly important to health and performance.
These
nutrients, as well as others, are best obtained from a varied and wholesome
nutrient-rich diet based largely on vegetables, fruits, beans, legumes, grains,
lean meats, dairy foods and healthy oils. Dietary surveys show that most
athletes are well able to meet the recommended intakes for vitamins and
minerals by eating everyday these foods. Electrolyte replacement for the
athlete who is sweating abundantly is provided by minerals in the athlete’s
generous, mixed diet. Moreover, antioxidant nutrients help the body neutralize
harmful oxidizing products that may accumulate during intense or prolonged
training and potentially damage healthy tissues and impair proper recovery.
Another
concern of these athletes are the exhaustion cramps and the so-called heat
stroke disorders that result from varying degrees of bodily fluid deprivation
with the danger of producing circulatory inefficiency. Exercised muscle, with
an inadequate circulation of body fluids, induces cramps. The sudden acute loss
of plasma volume and inadequate circulation to the central nervous system
causes heat exhaustion. Severe reduction of circulatory efficacy limits the
athlete’s ability to transport and dissipate body heat, thus increasing the
threat of heat stroke [43]. Monitoring water needs, scheduling the intake of
cold and clean water regularly during training and competition, and being
attentive to adverse environmental conditions prevent these adversities. Water
is an important nutrient for the athlete. Water loss during an athletic event
varies between individuals. Sweat loss can be tracked by measuring weight immediately
before and after exercise.
To
avoid dehydration, an athlete should drink 5 to 7mL per kilogram of body mass
approximately four hours before an event. Throughout the event, they should
drink chilled water or electrolyte drinks, consuming enough to match sweat
losses. Chilled fluids are absorbed faster and help lower body temperature.
After exercise, 16-24 oz., of water should be for every pound that was lost
during the athletic event. By routinely tracking pre- and post- exercise weight
changes, sweat rates can be estimated, allowing for more efficient hydration
during athletic events. An individual should never gain weight during exercise;
this is a sign of excessive hydration, which can lead to electrolyte
imbalances, and potentially hyponatremia. It is important to account for
environmental concerns when considering water consumption. Sweat rates may
increase dramatically in hot and humid weather, and it is increasingly
important for an athlete to stay hydrated [40].
Elderly People
Ageing
at a biological level, is associated with the gradual accumulation of a wide
variety of molecular and cellular damage. Over time, this damage leads to a
gradual decrease in physiological reserves, an increased risk of many diseases,
and a general decline in the capacity of the individual. Consequently, older
people have intrinsic needs for especial food. So, this population must be
taken care of in its specific nutritional requirements as a part of state
policies of food security. WHO, in 2014, 2015 [44,45] has work on this context
and has defined the term Healthy Ageing as the process of developing and
maintaining the functional ability that enables well-being in older age.
Therefore, a fraction of the food researching, and processing must be focused
to this direction.
Ageing
is normally measured by chronological age and, as a convention, a person aged
65 years or more is often referred to as ‘elderly’. However, the ageing process
is not uniform across the population due to differences in genetics, lifestyle,
and overall health [46]. A first attempt to internationally define age was made
by the World Health Organization (WHO) and United Nations in 2002 [47]
declaring that “old age” is denoted by the age of 60-65 years in the developed
world. Gorman, 1999 [48] pointed out that in contrast to the chronological
milestones which mark life stages in the developed world, old age in many
developing countries is seen to begin at the point when active contribution is
no longer possible. Forman et al. [49] who categorized generation 60+ in the
“young old” (60-69 y), the “middle old” (70-79 y), and the “very old” (80 + y)
persons or Zizza et al. [50], who divided the elderly in the three categories
of “young olds” (65-74 y), “middle olds” (75-84 y), and “oldest olds” (85+ y).
Globally, the number of older persons (aged 60 years or over) is expected to
more than double, from 841 million people in 2013 to more than 2 billion in
2050 [51].
Due
to physiological changes associated with ageing older people can have different
nutritional needs to younger people, for example, the over 75s are at greater
risk from malnutrition than obesity and many over 60s would benefit from higher
vitamin D intake. Current dietary recommendations do not distinguish between
different age groups of older people, despite the fact that a 55-year-old and
an 80-year-old can have some significantly different nutritional needs and
there is very little research into what the oldest old (the over 80s) actually
eat [52]. Healthy ageing is associated with a number of physiological,
cognitive, social and lifestyle changes that influence on their dietary intake
and nutritional status. The changes in body composition and physiology process
from the ageing process involves every tissue and all vital organs. These changes
have a profound influence on the nutritional status of the ageing adult and
affect: the body’s metabolism, nutrient intake, absorption, storage,
utilization and excretion of nutrients, nutrient requirements, and the ability
to choose, prepare and eat a variety of foods, bringing as a consequence some
associated illness:
Sarcopenia: As a natural part of the aging
process, come the sarcopenia, which is an inevitable loss in lean body mass
(skeletal muscle and bone) and a relative increase in fat mass over time (WHO
2002). Bones loss Calcium absorption is known to decrease with age in both
genders, then ageing is associated with a loss of bone and total body calcium
[47]. Osteoporosis is a skeletal disorder associated with aging and
characterized by compromised bone strength due to reduced bone mass and reduced
bone quality [53]. Adequate calcium and vitamin D status is essential for
minimizing bone loss following menopause and preventing fractures [54].
Arthritis: The term defines around 200
rheumatic disease and conditions that affect joints when prolonged inflammation
results in long-term pain and deformity [55]. Osteoarthritis is common in the
elderly and usually affects the hip and knee joints that limit their functional
capacity. Consequently, they may become unable to shop, handle and prepare food
and cook. There is increasing research being conducted into the use of diet to
prevent and manage arthritis [56]. Declining of gastrointestinal digestive and
absorptive functions. As consequence of the changes in the oral sphere,
decrease in the number of oro-sensory receptors (mechanoand gustative
receptors), decline in saliva secretions, esophageal dysphagia, alterations in
chemosensory perception, tooth loss and oral disorders related decline of the
absorptive function for several reasons make elder consumers a strictly target
to be monitored from a nutrition point of view [56-58].
Additional
to the mechanical disintegration of food, it is decreased the gastrointestinal
motor function, food transit, chemical food digestion, and functionality of the
intestinal wall. These alterations progressively decrease the ability of the
absorption intestinal to provide the aging organism with adequate levels of
nutrients, what contributes to the development of malnutrition. Malnutrition,
in turn, increases the risks for the development of a range of pathologies
associated with most organ systems, in particular the nervous-, muscoskeletal-,
cardiovascular-, immune-, and skin systems. Therefore, the elaboration of food
with special characteristic to solve these elderly needs have to be innovated
and a intense participation from institutional bodies, thus contributing to
limiting the impact of malnutrition on the health status of elderly. Indeed,
the access to and consumption of healthy food for older people is influenced by
the wider determinants of health. These determinants include cultural, social,
historical and economic factors. A life course approach to ageing recognizes
that the effects of these determinants accumulate throughout the life span and
have an impact on health. Because of this cumulative impact, interventions
modifying the determinants of health are important at all stages of life [59].
Consumers with Special Diets Regimes, which Control or Prevent
him/her Illness
They
are defined as consumers that need those preparations that are specially
processed or formulated to meet the particular physical or physiological needs
and/or specific diseases and disorders that occur as such. The Non-Communicable
Diseases (NCDs), that have become a major health priority, are closely related
to this kind of consumers. Foods, diet and nutritional status, including
overweight and obesity are not only risk factors for Noncommunicable Diseases
(NCDs), but major causes of illness themselves. Undernutrition, and its effects
on growth, development and maturation, has numerous detrimental outcomes,
including the potential to increase risk of developing an NCD later in life
[60]. NCDs, also known as chronic diseases, tend to be of long duration and are
the result of a combination of genetic, physiological, environmental and
behaviors factors [61].
Chronic
noncommunicable diseases are typically characterized by: absence of causative
microorganism, multiple risk factors, prolonged latency, long duration with
periods of remission and recurrence, importance of lifestyle factors and the
physical and social environment, long-term consequences (physical and mental
handicaps). Examples include cardiovascular disease, cancer, diabetes,
arthritis, asthma, and mental illness. However, more specifically there are
manifestations and prevention of some of the most important chronic diseases
that are associated with nutrition as an example: atherosclerotic heart
disease, high blood pressure or hypertension, diabetes Mellitus, cancer,
osteoporosis, mental diseases, obesity and other conditions, such as: celiac
disease, phenylketonuria, lactose intolerance, and proteins, among others [62].
In
some of these diseases the cause is clearly food; In others, diet can contribute
significantly to the cause or treatment; and in others, the relationship with
the diet is suspected, but has not yet been established. In spite of all the
information and discussion at the global level, it is only during the last
decades that the role of food in the prevention of diseases has been justified
[45,62]. For instance, there are two main forms of diabetes: Type 1 diabetes is
due primarily to autoimmune-mediated destruction of pancreatic b-cell islets,
resulting in absolute insulin deficiency. People with type 1 diabetes, beside
to control diet, must take exogenous insulin for survival to prevent the
development of ketoacidosis. Its frequency is low relative to type 2 diabetes,
which accounts for over 90% of cases globally. Type 2 diabetes is characterized
by insulin resistance and/or abnormal insulin secretion, either of which may
predominate. People with type 2 diabetes are not dependent on exogenous insulin
but may require it for control of blood glucose levels if this is not achieved
with diet alone or with oral hypoglycaemic agents [63].
Celiac
Disease (CD) is an immune-mediated enteropathy triggered in genetically
susceptible individuals by the ingestion of gluten-containing grains (wheat,
barley, and rye). The disease is associated with Human Leukocyte Antigen (HLA)
DQ2 and DQ8 haplotypes. In the continued presence of gluten, CD is
selfperpetuating. Given the undisputed role of gluten in causing inflammation
and autoimmunity, CD represents a unique example of an immune-mediated disease
for which early serologic diagnosis and dietary treatment can prevent severe,
sometimes life-threatening complications [64]. Osteoporosis is a chronic
noncommunicable diseases, in which the diet can contribute significantly to its
cause or treatment. It has been suggested a diet with an adequate content of
calcium. After 50 years, it must contain approximately 1-200mg of calcium per
day. This is contributing mostly with dairy products, preferably those that are
fortified with calcium, since they contain 40-100% more calcium than
nonfortified products. In case of intolerance to dairy products can be used
lactose-free milks, or supplements can be given calcium pharmaceuticals, which
should be indicated by the doctor to assess the dose, the duration of treatment
and the type of calcium salt to be used [65,66].
Phenylketonuria
(PKU) is one of the most common of over 200 known such diseases, at least 30 of
which have treatments to ameliorate the adverse effects. PKU is one of the
first diseases causing mental and physical disability for which successful
treatment has been developed. The cause of PKU is defective function of the
enzyme phenylalanine hydroxylase (EC 1.14.16.1) which converts phenylalanine to
tyrosine. The subsequent elevation of phenylalanine in the blood and brain
results in profound, irreversible, mental retardation in a large number of the
affected individuals [67]. In 1954 Bickle [68] and associates were the first to
introduce treatment for PKU with a phenylalanine restricted diet. The first efforts
were very crude and the initial patient was an older child already damaged. The
improvement in behavior prompted more refined efforts. It became obvious that
very early diagnosis was crucial as much of the adverse effect on the brain in
the first few months of life were irreversible, hence the initiation of
universal newborn screening [69].
Conclusion
When
defining the state policies of Food Security, all of these categories must be
recurrently considered as regular and important groups. Moreover, all state
entities must to stablish policies in order the perform researching and to
processing lots of specific foods for the different consumer above classified.
The elaboration of these foods has to be done including inside its formulation
and processing, those issues social, religious, cultural, gastronomy,
accessibility, cost, and health. Their production might have practical
implications in terms of improved space management in supermarkets and better
and innovative targeted promotions of healthy products. The food processors and
distributors also must support them in a commercial context. In other words, putting
the food researching and processing in the framework of preventive medicine.
Prevention of diseases through food is a challenge that have be faced by health
professionals; such as, doctors and nutritionist, however speaking in a very
strict term; it is also imperative to involve technologists and food
processors. This relationship between health and food, even though it was
postulated as mentioned above very remotely and is handled in the
medical-nutritionist slang, is not yet achieved because food science and
technology have very little participation in this situation. Although there is
consensus that there are conditions in the lives of normal consumers, or with
physiological or metabolic disorders that must be prevented and/or controlled
with diets, there is still no specific and committed sector in food production
that fills this space. In addition to food production, aimed at conventional
consumers with dietary regimes, there should also be food for consumers with
noncommunicable diseases that can be controlled or with special dietary regimes
https://lupinepublishers.com/food-and-nutri-journal/fulltext/food-nutrition-and-preventive-medicine.ID.000112.php
For more Lupine Publishers Open Access Journals Please visit our website: https://lupinepublishersgroup.com/
For more Food And Nutrition Please Click
Here: https://lupinepublishers.com/food-and-nutri-journal/
To Know more Open Access Publishers Click on Lupine Publishers
Follow on Linkedin : https://www.linkedin.com/company/lupinepublishers
Follow on Twitter : https://twitter.com/lupine_online
No comments:
Post a Comment