Breast milk
Encyclopedia
Breast milk, more specifically human milk, is the milk
Milk
Milk is a white liquid produced by the mammary glands of mammals. It is the primary source of nutrition for young mammals before they are able to digest other types of food. Early-lactation milk contains colostrum, which carries the mother's antibodies to the baby and can reduce the risk of many...

 produced by the breast
Breast
The breast is the upper ventral region of the torso of a primate, in left and right sides, which in a female contains the mammary gland that secretes milk used to feed infants.Both men and women develop breasts from the same embryological tissues...

s (or mammary glands) of a human
Human
Humans are the only living species in the Homo genus...

 female for her infant offspring. Milk is the primary source of nutrition for newborns before they are able to eat and digest other foods; older infants and toddlers may continue to be breastfed
Breastfeeding
Breastfeeding is the feeding of an infant or young child with breast milk directly from female human breasts rather than from a baby bottle or other container. Babies have a sucking reflex that enables them to suck and swallow milk. It is recommended that mothers breastfeed for six months or...

, either exclusively or in combination with other foods.

The baby nursing from its own mother is the most ordinary way of obtaining breastmilk, but the milk can be pumped
Breast pump
A breast pump is a mechanical device that extracts milk from the breasts of a lactating woman. Breast pumps may be manual devices powered by hand or foot movements or electrical devices powered by mains electricity or batteries.- History :...

 and then fed by baby bottle
Baby bottle
A baby bottle is a bottle with a teat to drink directly from. It is typically used by infants and young children when a mother does not breastfeed, or if someone cannot drink from a cup, for feeding oneself or being fed.In particular it is used to feed infant formula, expressed breast milk or...

, cup and/or spoon, supplementation drip system, and nasogastric tube. Breastmilk can be supplied by a woman other than the baby's mother; either via donated pumped milk (for example from a milk bank), or when a woman nurses a child other than her own at her breast—an ancient and storied practice known as wetnursing.

The World Health Organization
World Health Organization
The World Health Organization is a specialized agency of the United Nations that acts as a coordinating authority on international public health. Established on 7 April 1948, with headquarters in Geneva, Switzerland, the agency inherited the mandate and resources of its predecessor, the Health...

 recommends exclusive breastfeeding for the first six months of life, with solids gradually being introduced around this age when signs of readiness are shown. Supplemented breastfeeding is recommended until at least age two and then for as long as the mother and child wish.

Breastfeeding continues to offer health benefits into and after toddlerhood. These benefits include; lowered risk of Sudden Infant Death Syndrome
Sudden infant death syndrome
Sudden infant death syndrome is marked by the sudden death of an infant that is unexpected by medical history, and remains unexplained after a thorough forensic autopsy and a detailed death scene investigation. An infant is at the highest risk for SIDS during sleep, which is why it is sometimes...

 (SIDS), increased intelligence
Intelligence
Intelligence has been defined in different ways, including the abilities for abstract thought, understanding, communication, reasoning, learning, planning, emotional intelligence and problem solving....

, decreased likelihood of contracting middle ear infections, cold, and flu bugs, a tiny decrease in the risk of childhood leukemia, lower risk of childhood onset diabetes, decreased risk of asthma and eczema, decreased dental problems, decreased risk of obesity later in life, and decreased risk of developing psychological disorders.

Breastfeeding also provides health benefits for the mother. It assists the uterus in returning to its pre-pregnancy size and reduces post-partum bleeding, as well as assisting the mother in returning to her pre-pregnancy weight. Breastfeeding also reduces the risk of breast cancer later in life.

Production

Under the influence of the hormones prolactin
Prolactin
Prolactin also known as luteotropic hormone is a protein that in humans is encoded by the PRL gene.Prolactin is a peptide hormone discovered by Henry Friesen...

 and oxytocin
Oxytocin
Oxytocin is a mammalian hormone that acts primarily as a neuromodulator in the brain.Oxytocin is best known for its roles in sexual reproduction, in particular during and after childbirth...

, women produce milk after childbirth
Childbirth
Childbirth is the culmination of a human pregnancy or gestation period with the birth of one or more newborn infants from a woman's uterus...

 to feed the baby. The initial milk produced is often referred to as colostrum
Colostrum
Colostrum is a form of milk produced by the mammary glands of mammals in late pregnancy. Most species will generate colostrum just prior to giving birth...

, which is high in the immunoglobulin IgA
IGA
Iga or IGA may stand for:-Given name:* a female given name of Polish origin. The name originates from the female given name Jadwiga and stands for gia,or gina in the USA....

, which coats the gastrointestinal tract
Gastrointestinal tract
The human gastrointestinal tract refers to the stomach and intestine, and sometimes to all the structures from the mouth to the anus. ....

. This helps to protect the newborn until its own immune system
Immune system
An immune system is a system of biological structures and processes within an organism that protects against disease by identifying and killing pathogens and tumor cells. It detects a wide variety of agents, from viruses to parasitic worms, and needs to distinguish them from the organism's own...

 is functioning properly, and creates a mild laxative effect, expelling meconium
Meconium
Meconium is the earliest stools of an infant. Unlike later feces, meconium is composed of materials ingested during the time the infant spends in the uterus: intestinal epithelial cells, lanugo, mucus, amniotic fluid, bile, and water. Meconium is almost sterile, unlike later feces, is viscous and...

 and helping to prevent the build up of bilirubin
Bilirubin
Bilirubin is the yellow breakdown product of normal heme catabolism. Heme is found in hemoglobin, a principal component of red blood cells. Bilirubin is excreted in bile and urine, and elevated levels may indicate certain diseases...

 (a contributory factor in jaundice
Jaundice
Jaundice is a yellowish pigmentation of the skin, the conjunctival membranes over the sclerae , and other mucous membranes caused by hyperbilirubinemia . This hyperbilirubinemia subsequently causes increased levels of bilirubin in the extracellular fluid...

).

Actual inability to produce enough milk is rare, with studies showing that mothers from developing countries who are experiencing nutritional hardship still produce amounts of milk of similar quality to mothers in developed countries. There are many reasons a mother may not produce enough breast milk. Some of the most common are an improper latch (i.e. the baby does not connect efficiently with the nipple), not nursing or pumping enough to meet supply, certain medications (including estrogen-containing hormonal contraceptives), illness, and dehydration. A rarer reason is Sheehan's syndrome
Sheehan's syndrome
Sheehan syndrome, also known as Simmonds' syndrome or postpartum hypopituitarism or postpartum pituitary necrosis, is hypopituitarism , caused by necrosis due to blood loss and hypovolemic shock during and after childbirth...

, also known as postpartum hypopituitarism
Hypopituitarism
Hypopituitarism is the decreased secretion of one or more of the eight hormones normally produced by the pituitary gland at the base of the brain...

, which is associated with prolactin deficiency; this syndrome may require hormone replacement.

The amount of milk produced depends on how often the mother is nursing and/or pumping
Breast pump
A breast pump is a mechanical device that extracts milk from the breasts of a lactating woman. Breast pumps may be manual devices powered by hand or foot movements or electrical devices powered by mains electricity or batteries.- History :...

; the more the mother nurses her baby, or pumps
Breast pump
A breast pump is a mechanical device that extracts milk from the breasts of a lactating woman. Breast pumps may be manual devices powered by hand or foot movements or electrical devices powered by mains electricity or batteries.- History :...

, the more milk is produced. It is very helpful to nurse on demand - to nurse when the baby wants to nurse rather than on a schedule. If pumping, it is helpful to have an electric high grade pump so that all of the milk ducts are stimulated. Some mothers try to increase their milk supply in other ways - by taking the herb fenugreek
Fenugreek
Fenugreek is a plant in the family Fabaceae. Fenugreek is used both as a herb and as a spice . The leaves and sprouts are also eaten as vegetables...

, used for hundreds of years to increase supply ("Mother's Milk" teas contain fenugreek as well as other supply-increasing herbs); there are also prescription medications that can be used, such as Domperidone
Domperidone
Domperidone is an antidopaminergic drug, developed by Janssen Pharmaceutica, and used orally, rectally or intravenously, generally to suppress nausea and vomiting, or as a prokinetic agent...

 (off-label use) and Reglan. Increasers of milk supply are known as galactagogue
Galactagogue
A galactagogue is a substance that promotes lactation in humans and other animals. It may be synthetic, plant-derived, or endogenous.-Herbal:The most commonly cited galactagogues are herbal...

s.

Composition

Composition of human breast milk
Fat
total (g/100 ml) 4.2
fatty acids - length 8C (% ) trace
polyunsaturated fatty acids (%) 14
Protein (g/100 ml)
total 1.1
casein 0.4 0.3
a-lactalbumin 0.3
lactoferrin 0.2
IgA 0.1
IgG 0.001
lysozyme 0.05
serum albumin 0.05
ß-lactoglobulin -
Carbohydrate (g/100 ml)
lactose 7
oligosaccharides 0.5
Minerals (g/100 ml)
calcium 0.03
phosphorus 0.014
sodium 0.015
potassium 0.055
chlorine 0.043


The exact integrated properties of breast milk are not entirely understood, but the nutrient
Nutrient
A nutrient is a chemical that an organism needs to live and grow or a substance used in an organism's metabolism which must be taken in from its environment. They are used to build and repair tissues, regulate body processes and are converted to and used as energy...

 content after this period is relatively consistent and draws its ingredients from the mother's food supply. If that supply is found lacking, content is obtained from the mother's bodily stores. The exact composition of breast milk varies from day to day, depending on food consumption and environment, meaning that the ratio of water to fat
Fat
Fats consist of a wide group of compounds that are generally soluble in organic solvents and generally insoluble in water. Chemically, fats are triglycerides, triesters of glycerol and any of several fatty acids. Fats may be either solid or liquid at room temperature, depending on their structure...

 fluctuates.

During the first few days after delivery, the breasts produce colostrum. This is a thin yellowish fluid that is the same fluid that leaks from the breasts during pregnancy. It is rich in protein and antibodies that provide passive immunity to the baby (the baby's immune system is not fully developed at birth). Colostrum also helps the newborn's digestive system to grow and function properly.

After 3 to 4 days, breasts will begin producing milk that is thin, watery, and sweet. This quenches the baby's thirst and provides the proteins, sugar, and minerals that the baby needs. Over time, the milk changes and becomes thick and creamy. This satisfies the baby's hunger.

Foremilk, the milk released at the beginning of a feed, is watery, low in fat, and high in carbohydrate
Carbohydrate
A carbohydrate is an organic compound with the empirical formula ; that is, consists only of carbon, hydrogen, and oxygen, with a hydrogen:oxygen atom ratio of 2:1 . However, there are exceptions to this. One common example would be deoxyribose, a component of DNA, which has the empirical...

s relative to the creamier hindmilk, which is released as the feed progresses. The breast can never be truly "emptied," since milk production is a continuous biological process.

The level of Immunoglobilin A (IgA) in breast milk remains high from day 10 until at least 7.5 months post-partum.

Human milk contains 0.8% to 0.9% protein, 4.5% fat, 7.1% carbohydrates, and 0.2% ash (minerals). Carbohydrates are mainly lactose
Lactose
Lactose is a disaccharide sugar that is found most notably in milk and is formed from galactose and glucose. Lactose makes up around 2~8% of milk , although the amount varies among species and individuals. It is extracted from sweet or sour whey. The name comes from or , the Latin word for milk,...

; several lactose-based oligosaccharides have been identified as minor components.
The fat fraction contains specific triglycerides of palmitic
Palmitic acid
Palmitic acid, or hexadecanoic acid in IUPAC nomenclature, is one of the most common saturated fatty acids found in animals and plants. Its molecular formula is CH314CO2H. As its name indicates, it is a major component of the oil from palm trees . Palmitate is a term for the salts and esters of...

 and oleic acid
Oleic acid
Oleic acid is a monounsaturated omega-9 fatty acid found in various animal and vegetable fats. It has the formula CH37CH=CH7COOH. It is an odorless, colourless oil, although commercial samples may be yellowish. The trans isomer of oleic acid is called elaidic acid...

 (O-P-O triglycerides), and also quite a large quantity of lipids with trans bonds (see: trans fat
Trans fat
Trans fat is the common name for unsaturated fat with trans-isomer fatty acid. Because the term refers to the configuration of a double carbon-carbon bond, trans fats are sometimes monounsaturated or polyunsaturated, but never saturated....

) that are considered to have a health benefit. They are vaccenic acid
Vaccenic acid
Vaccenic acid is an omega-7 fatty acid. It is a naturally occurring trans-fatty acid found in the fat of ruminants and in dairy products such as milk, butter, and yogurt. It is also the predominant fatty acid comprising trans fat in human milk....

, and Conjugated linoleic acid
Conjugated linoleic acid
Conjugated linoleic acids are a family of at least 28 isomers of linoleic acid found mainly in the meat and dairy products derived from ruminants. As the name implies, the double bonds of CLAs are conjugated, with only one single bond between them....

 (CLA) accounting for up to 6% of the human milk fat.

The principal proteins are casein
Casein
Casein is the name for a family of related phosphoprotein proteins . These proteins are commonly found in mammalian milk, making up 80% of the proteins in cow milk and between 60% and 65% of the proteins in human milk....

 (homologous
Homology (biology)
Homology forms the basis of organization for comparative biology. In 1843, Richard Owen defined homology as "the same organ in different animals under every variety of form and function". Organs as different as a bat's wing, a seal's flipper, a cat's paw and a human hand have a common underlying...

 to bovine beta-casein), alpha-lactalbumin
Lactalbumin
Lactalbumin is the albumin contained in milk and obtained from whey. Lactalbumin is found in the milk of many mammals. There are alpha and beta lactalbumins; both contained in milk....

, lactoferrin
Lactoferrin
Lactoferrin , also known as lactotransferrin , is a multifunctional protein of the transferrin family. Lactoferrin is a globular glycoprotein with a molecular mass of about 80 kDa that is widely represented in various secretory fluids, such as milk, saliva, tears, and nasal secretions...

, IgA
IGA
Iga or IGA may stand for:-Given name:* a female given name of Polish origin. The name originates from the female given name Jadwiga and stands for gia,or gina in the USA....

, lysozyme
Lysozyme
Lysozyme, also known as muramidase or N-acetylmuramide glycanhydrolase, are glycoside hydrolases, enzymes that damage bacterial cell walls by catalyzing hydrolysis of 1,4-beta-linkages between N-acetylmuramic acid and N-acetyl-D-glucosamine residues in a peptidoglycan and between...

, and serum albumin
Serum albumin
Serum albumin, often referred to simply as albumin is a protein that in humans is encoded by the ALB gene.Serum albumin is the most abundant plasma protein in mammals. Albumin is essential for maintaining the osmotic pressure needed for proper distribution of body fluids between intravascular...

. In an acidic environment such as the stomach
Stomach
The stomach is a muscular, hollow, dilated part of the alimentary canal which functions as an important organ of the digestive tract in some animals, including vertebrates, echinoderms, insects , and molluscs. It is involved in the second phase of digestion, following mastication .The stomach is...

, alpha-lactalbumin unfolds
Protein folding
Protein folding is the process by which a protein structure assumes its functional shape or conformation. It is the physical process by which a polypeptide folds into its characteristic and functional three-dimensional structure from random coil....

 into a different form and binds oleic acid
Oleic acid
Oleic acid is a monounsaturated omega-9 fatty acid found in various animal and vegetable fats. It has the formula CH37CH=CH7COOH. It is an odorless, colourless oil, although commercial samples may be yellowish. The trans isomer of oleic acid is called elaidic acid...

 to form a complex called HAMLET that kills tumor
Tumor
A tumor or tumour is commonly used as a synonym for a neoplasm that appears enlarged in size. Tumor is not synonymous with cancer...

 cells. This is thought to contribute to the protection of breastfed babies against cancer.

Non-protein nitrogen-containing compounds, making up 25% of the milk's nitrogen, include urea
Urea
Urea or carbamide is an organic compound with the chemical formula CO2. The molecule has two —NH2 groups joined by a carbonyl functional group....

, uric acid
Uric acid
Uric acid is a heterocyclic compound of carbon, nitrogen, oxygen, and hydrogen with the formula C5H4N4O3. It forms ions and salts known as urates and acid urates such as ammonium acid urate. Uric acid is created when the body breaks down purine nucleotides. High blood concentrations of uric acid...

, creatine
Creatine
Creatine is a nitrogenous organic acid that occurs naturally in vertebrates and helps to supply energy to all cells in the body, primarily muscle. This is achieved by increasing the formation of Adenosine triphosphate...

, creatinine
Creatinine
Creatinine is a break-down product of creatine phosphate in muscle, and is usually produced at a fairly constant rate by the body...

, amino acid
Amino acid
Amino acids are molecules containing an amine group, a carboxylic acid group and a side-chain that varies between different amino acids. The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen...

s, and nucleotide
Nucleotide
Nucleotides are molecules that, when joined together, make up the structural units of RNA and DNA. In addition, nucleotides participate in cellular signaling , and are incorporated into important cofactors of enzymatic reactions...

s. Breast milk has circadian variations; some of the nucleotides are more commonly produced during the night, others during the day.

Mother's milk has been shown to supply a type of endocannabinoid (the natural neurotransmitters that marijuana simulates), 2-Arachidonoyl glycerol
2-Arachidonoylglycerol
2-Arachidonoylglycerol is an endocannabinoid, an endogenous agonist of the CB1 receptor. It is an ester formed from the omega-6 fatty acid arachidonic acid and glycerol. It is present at relatively high levels in the central nervous system, with cannabinoid neuromodulatory effects. It has been...

.

Though it now is almost universally prescribed, in some countries in the 1950s the practice of breastfeeding
Breastfeeding
Breastfeeding is the feeding of an infant or young child with breast milk directly from female human breasts rather than from a baby bottle or other container. Babies have a sucking reflex that enables them to suck and swallow milk. It is recommended that mothers breastfeed for six months or...

 went through a period where it was out of vogue and the use of infant formula
Infant formula
Infant formula is a manufactured food designed and marketed for feeding to babies and infants under 12 months of age, usually prepared for bottle-feeding or cup-feeding from powder or liquid . The U.S...

 was considered superior to breast milk. However, it is now universally recognized that there is no commercial formula that can equal breast milk. In addition to the appropriate amounts of carbohydrate
Carbohydrate
A carbohydrate is an organic compound with the empirical formula ; that is, consists only of carbon, hydrogen, and oxygen, with a hydrogen:oxygen atom ratio of 2:1 . However, there are exceptions to this. One common example would be deoxyribose, a component of DNA, which has the empirical...

, protein
Protein
Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups of...

, and fat
Fat
Fats consist of a wide group of compounds that are generally soluble in organic solvents and generally insoluble in water. Chemically, fats are triglycerides, triesters of glycerol and any of several fatty acids. Fats may be either solid or liquid at room temperature, depending on their structure...

, breast milk provides vitamin
Vitamin
A vitamin is an organic compound required as a nutrient in tiny amounts by an organism. In other words, an organic chemical compound is called a vitamin when it cannot be synthesized in sufficient quantities by an organism, and must be obtained from the diet. Thus, the term is conditional both on...

s, mineral
Mineral
A mineral is a naturally occurring solid chemical substance formed through biogeochemical processes, having characteristic chemical composition, highly ordered atomic structure, and specific physical properties. By comparison, a rock is an aggregate of minerals and/or mineraloids and does not...

s, digestive enzyme
Digestive enzyme
'Digestive enzymes' are enzymes that break down polymeric macromolecules into their smaller building blocks, in order to facilitate their absorption by the body. Digestive enzymes are found in the digestive tract of animals where they aid in the digestion of food as well as inside the cells,...

s, and hormones - all of the things that a growing infant will require. Breast milk also contains antibodies and lymphocytes from the mother that help the baby resist infections. The immune function of breast milk is individualized, as the mother, through her touching and taking care of the baby, comes into contact with pathogens that colonize the baby, and, as a consequence, her body makes the appropriate antibodies and immune cells. This is the reason why breast milk contains very little iron, as iron is an essential precursor to the activation of micro-bacteria and gut flora; providing iron in the milk would lead to infection. However, the internal iron supplies of the infant, held in the hepatic cells of the liver, are exhausted at 4–6 months, hence this is the time that complimentary feeding is introduced, as to prevent anaemia (recommended by WHO).

Women breastfeeding
Breastfeeding
Breastfeeding is the feeding of an infant or young child with breast milk directly from female human breasts rather than from a baby bottle or other container. Babies have a sucking reflex that enables them to suck and swallow milk. It is recommended that mothers breastfeed for six months or...

 should consult with their physician regarding substances that can be unwittingly passed to the infant via breast milk, such as alcohol
Alcohol
In chemistry, an alcohol is an organic compound in which the hydroxy functional group is bound to a carbon atom. In particular, this carbon center should be saturated, having single bonds to three other atoms....

, viruses (HIV
HIV
Human immunodeficiency virus is a lentivirus that causes acquired immunodeficiency syndrome , a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive...

 or HTLV-1) or medications.

Most women that do not breastfeed use infant formula
Infant formula
Infant formula is a manufactured food designed and marketed for feeding to babies and infants under 12 months of age, usually prepared for bottle-feeding or cup-feeding from powder or liquid . The U.S...

, but breast milk donated by volunteers to human milk banks can be obtained by prescription in some countries.

Storage of expressed breast milk

Expressed breast milk can be stored for later use. It is recommended that the milk is stored in hard-sided containers with airtight seals. Some plastic bags specifically manufactured for the storage of expressed breast milk are designed for storage periods of less than 72 hours - others can be used for up to 6 months if frozen. The amount of time that it can be safely stored for use by infants in a home-based situation is given in this table.
Place of storage Temperature Maximum storage time
In a room 25°C 77°F Six to eight hours
Insulated thermal bag
Thermal bag
A thermal bag is a type of insulated shipping container. It is usually a bag made of materials that have thermal insulation properties and is used to help maintain the temperature of any contents A thermal bag is a type of insulated shipping container. It is usually a bag made of materials that...

 with ice packs
Up to 24 hours
In a refrigerator
Refrigerator
A refrigerator is a common household appliance that consists of a thermally insulated compartment and a heat pump that transfers heat from the inside of the fridge to its external environment so that the inside of the fridge is cooled to a temperature below the ambient temperature of the room...

4°C 39°F Up to five days
Freezer compartment inside a refrigerator
Refrigerator
A refrigerator is a common household appliance that consists of a thermally insulated compartment and a heat pump that transfers heat from the inside of the fridge to its external environment so that the inside of the fridge is cooled to a temperature below the ambient temperature of the room...

-15°C 5°F Two weeks
A combined refrigerator
Refrigerator
A refrigerator is a common household appliance that consists of a thermally insulated compartment and a heat pump that transfers heat from the inside of the fridge to its external environment so that the inside of the fridge is cooled to a temperature below the ambient temperature of the room...

 and freezer with separate doors
-18°C 0°F Three to six months
Chest or upright manual defrost deep freezer -20°C -4°F Six to twelve months

Comparison to other milks

All mammal
Mammal
Mammals are members of a class of air-breathing vertebrate animals characterised by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young...

 species produce milk, but the composition of milk for each species varies widely and other kinds of milk are often very different from human breast milk. As a rule, the milk of mammals that nurse frequently (including human babies) is less rich, or more watery, than the milk of mammals whose young nurse less often. Human milk is noticeably thinner and sweeter than cow's milk.

Whole cow's milk does not contain sufficient vitamin E
Vitamin E
Vitamin E is used to refer to a group of fat-soluble compounds that include both tocopherols and tocotrienols. There are many different forms of vitamin E, of which γ-tocopherol is the most common in the North American diet. γ-Tocopherol can be found in corn oil, soybean oil, margarine and dressings...

, iron
Iron
Iron is a chemical element with the symbol Fe and atomic number 26. It is a metal in the first transition series. It is the most common element forming the planet Earth as a whole, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust...

, or essential fatty acid
Fatty acid
In chemistry, especially biochemistry, a fatty acid is a carboxylic acid with a long unbranched aliphatic tail , which is either saturated or unsaturated. Most naturally occurring fatty acids have a chain of an even number of carbon atoms, from 4 to 28. Fatty acids are usually derived from...

s, which can make infants fed on cow's milk anemic
Anemia
Anemia is a decrease in number of red blood cells or less than the normal quantity of hemoglobin in the blood. However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin...

. Whole cow's milk also contains excessive amounts of protein
Protein
Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups of...

, sodium
Sodium
Sodium is a chemical element with the symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal and is a member of the alkali metals; its only stable isotope is 23Na. It is an abundant element that exists in numerous minerals, most commonly as sodium chloride...

, and potassium
Potassium
Potassium is the chemical element with the symbol K and atomic number 19. Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and is very reactive with water, generating sufficient heat to ignite the hydrogen emitted in the reaction.Potassium and sodium are...

, which may put a strain on an infant's immature kidneys. In addition, the proteins and fats in whole cow's milk are more difficult for an infant to digest and absorb than the ones in breast milk. Evaporated milk
Evaporated milk
Evaporated milk, also known as dehydrated milk, is a shelf-stable canned milk product with about 60% of the water removed from fresh milk. It differs from sweetened condensed milk, which contains added sugar. Sweetened condensed milk requires less processing since the added sugar inhibits ...

 may be easier to digest due to the processing of the protein but is still nutritionally inadequate. A significant minority of infants are allergic to one or more of the constituents of cow's milk, most often the cow's milk proteins. These problems can also affect infant formula
Infant formula
Infant formula is a manufactured food designed and marketed for feeding to babies and infants under 12 months of age, usually prepared for bottle-feeding or cup-feeding from powder or liquid . The U.S...

s derived from cow's milk.

Alternative uses for breast milk

Assertions that breast milk consumption is of benefit to adult humans are questionable because many of its components undergo digestion in the adult stomach, including antibodies and other proteins.

In addition to providing essential nourishment to infants, human milk; i.e., breast milk, has a number of valuable uses, especially medicinal uses, for both children and adults. It has been used medicinally for thousands of years. The antibacterial and healing properties of breast milk are often overlooked, even by the nursing mothers themselves. Breast milk contains strong antibodies and antitoxin
Antitoxin
An antitoxin is an antibody with the ability to neutralize a specific toxin. Antitoxins are produced by certain animals, plants, and bacteria. Although they are most effective in neutralizing toxins, they can kill bacteria and other microorganisms. Antitoxins are made within organisms, but can be...

s that many people believe promote healing and better overall health. However, breast milk lacks sterile and antiseptic properties if a nursing mother is infected with certain communicable diseases, such as HIV
HIV
Human immunodeficiency virus is a lentivirus that causes acquired immunodeficiency syndrome , a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive...

 and various bacterial infections like Group B streptococcus
Streptococcus
Streptococcus is a genus of spherical Gram-positive bacteria belonging to the phylum Firmicutes and the lactic acid bacteria group. Cellular division occurs along a single axis in these bacteria, and thus they grow in chains or pairs, hence the name — from Greek στρεπτος streptos, meaning...

, as breast milk can transmit such diseases to infants and other people.

Breast milk has been used as a home remedy
Home remedy
A home remedy is a treatment to cure a disease or ailment that employs certain spices, vegetables, or other common items. Home remedies may or may not have medicinal properties that treat or cure the disease or ailment in question, as they are typically passed along by laypersons...

 for minor ailments, such as conjunctivitis
Conjunctivitis
Conjunctivitis refers to inflammation of the conjunctiva...

, insect bites and stings, contact dermatitis
Contact dermatitis
Contact dermatitis is a term for a skin reaction resulting from exposure to allergens or irritants . Phototoxic dermatitis occurs when the allergen or irritant is activated by sunlight....

, and infected wounds, burn
Burn
A burn is an injury to flesh caused by heat, electricity, chemicals, light, radiation, or friction.Burn may also refer to:*Combustion*Burn , type of watercourses so named in Scotland and north-eastern England...

s, and abrasions. Breast milk has also been used alternatively
Alternative medicine
Alternative medicine is any healing practice, "that does not fall within the realm of conventional medicine." It is based on historical or cultural traditions, rather than on scientific evidence....

 to boost the immune system
Immune system
An immune system is a system of biological structures and processes within an organism that protects against disease by identifying and killing pathogens and tumor cells. It detects a wide variety of agents, from viruses to parasitic worms, and needs to distinguish them from the organism's own...

 of ill persons having viral gastroenteritis, influenza
Influenza
Influenza, commonly referred to as the flu, is an infectious disease caused by RNA viruses of the family Orthomyxoviridae , that affects birds and mammals...

, the common cold
Common cold
The common cold is a viral infectious disease of the upper respiratory system, caused primarily by rhinoviruses and coronaviruses. Common symptoms include a cough, sore throat, runny nose, and fever...

, pneumonia
Pneumonia
Pneumonia is an inflammatory condition of the lung—especially affecting the microscopic air sacs —associated with fever, chest symptoms, and a lack of air space on a chest X-ray. Pneumonia is typically caused by an infection but there are a number of other causes...

, etc., because of its immunologic
Immunology
Immunology is a broad branch of biomedical science that covers the study of all aspects of the immune system in all organisms. It deals with the physiological functioning of the immune system in states of both health and diseases; malfunctions of the immune system in immunological disorders ; the...

 properties. However, breast milk should never be seen or construed
Construals
Construal is a social psychological term used to describe how a person perceives, comprehends, and interprets the world around him or her, particularly the behavior or action of others towards him or her...

 as a "cure-all
Panacea (medicine)
The panacea , named after the Greek goddess of healing, Panacea, also known as panchrest, was supposed to be a remedy that would cure all diseases and prolong life indefinitely...

". Some medical experts are convinced that breast milk can induce apoptosis
Apoptosis
Apoptosis is the process of programmed cell death that may occur in multicellular organisms. Biochemical events lead to characteristic cell changes and death. These changes include blebbing, cell shrinkage, nuclear fragmentation, chromatin condensation, and chromosomal DNA fragmentation...

 in some types of cancer cells. However, more research and evidence are needed in this area of cancer treatment.

A minority of people, including restaurateur
Restaurant
A restaurant is an establishment which prepares and serves food and drink to customers in return for money. Meals are generally served and eaten on premises, but many restaurants also offer take-out and food delivery services...

Hans Lochen of Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

 and restaurateur
Restaurant
A restaurant is an establishment which prepares and serves food and drink to customers in return for money. Meals are generally served and eaten on premises, but many restaurants also offer take-out and food delivery services...

Daniel Angerer of Austria
Austria
Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

, who operates a restaurant in New York City, have used human breast milk, or at least advocated its use, as a substitute for cow's milk in dairy
Dairy
A dairy is a business enterprise established for the harvesting of animal milk—mostly from cows or goats, but also from buffalo, sheep, horses or camels —for human consumption. A dairy is typically located on a dedicated dairy farm or section of a multi-purpose farm that is concerned...

 products and food recipe
Recipe
A recipe is a set of instructions that describe how to prepare or make something, especially a culinary dish.-Components:Modern culinary recipes normally consist of several components*The name of the dish...

s. Tammy Frissell-Deppe, a family counselor specialized in attachment parenting
Attachment parenting
Attachment parenting, a phrase coined by pediatrician William Sears, is a parenting philosophy based on the principles of the attachment theory in developmental psychology. According to attachment theory, the child forms a strong emotional bond with caregivers during childhood with lifelong...

, published a book, titled A Breastfeeding Mother's Secret Recipes, providing a lengthy compilation of detailed food and beverage recipes containing human breast milk. The animal rights
Animal rights
Animal rights, also known as animal liberation, is the idea that the most basic interests of non-human animals should be afforded the same consideration as the similar interests of human beings...

 organization known as PETA
Peta
Peta can refer to:* peta-, an SI prefix denoting a factor of 1015* Peta, Greece, a town in Greece* Peta, the Pāli word for a Preta, or hungry ghost in Buddhism* Peta Wilson, an Australian actress and model* Peta Todd, English glamour model...

 ignited a firestorm of criticism when it urged a dairy company to replace the cow's milk they use in their ice cream products with human breast milk as a way to stop cattle abuse. Human breast milk is not produced or distributed industrially or commercially, because the use of human breast milk as an adult food is considered unusual to the majority of civilized culture
Culture
Culture is a term that has many different inter-related meanings. For example, in 1952, Alfred Kroeber and Clyde Kluckhohn compiled a list of 164 definitions of "culture" in Culture: A Critical Review of Concepts and Definitions...

s around the world, and most disapprove of such a practice.

Attempts to formulate soap
Soap
In chemistry, soap is a salt of a fatty acid.IUPAC. "" Compendium of Chemical Terminology, 2nd ed. . Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford . XML on-line corrected version: created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN...

 from breast milk have also been made, and those using it claim that its effectiveness as a cleanser
Cleanser
A cleanser is a product used to cleanse something, such as a detergent or industrial cleaning agent.A popular type of cleanser is a facial care product that is used to remove make-up, dead skin cells, oil, dirt, and other types of pollutants from the skin of the face...

 is greater than, or equal to, that of traditional soaps.

Passing of unwanted substances

Despite the risk of substances transmitting from the mother to the child through breast milk, breastfeeding has far more advantages than infant formula
Infant formula
Infant formula is a manufactured food designed and marketed for feeding to babies and infants under 12 months of age, usually prepared for bottle-feeding or cup-feeding from powder or liquid . The U.S...

s, and, with few exceptions, the WHO recommends exclusive breastfeeding for the first 6 months of life.

The milk-producing cells are most permeable to drugs during the first postpartum week.

Drug characteristics that increase excretion in milk include:
  1. Not plasma protein binding
    Plasma protein binding
    A drug's efficiency may be affected by the degree to which it binds to the proteins within blood plasma. The less bound a drug is, the more efficiently it can traverse cell membranes or diffuse. Common blood proteins that drugs bind to are human serum albumin, lipoprotein, glycoprotein, α, β‚ and γ...

  2. Non-ionized
  3. Low molecular weight
  4. Lipid solubility rather than water solubility
  5. Weakly alkaline rather than weak acid


Drugs are transferred from blood plasma across ductal cells to the milk by diffusion
Diffusion
Molecular diffusion, often called simply diffusion, is the thermal motion of all particles at temperatures above absolute zero. The rate of this movement is a function of temperature, viscosity of the fluid and the size of the particles...

 or active transport
Active transport
Active transport is the movement of a substance against its concentration gradient . In all cells, this is usually concerned with accumulating high concentrations of molecules that the cell needs, such as ions, glucose, and amino acids. If the process uses chemical energy, such as from adenosine...

. The latter may result in higher concentration of the drug in the breast milk than in the plasma of the mother.

The amounts of most drugs in milk do not exceed 2% of the total ingested dose.

Environmental pollutants

Environmental pollutants found in breast milk are usually not harmful, and should be considered only when environmental levels are unusually high. In addition, there has been a decrease in environmental levels, also resulting in a decrease breast-milk levels. Pollutants that are of most concern are pesticides, organic mercury, and lead
Lead
Lead is a main-group element in the carbon group with the symbol Pb and atomic number 82. Lead is a soft, malleable poor metal. It is also counted as one of the heavy metals. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed...

. DDT
DDT
DDT is one of the most well-known synthetic insecticides. It is a chemical with a long, unique, and controversial history....

 and dieldrin
Dieldrin
Dieldrin is a chlorinated hydrocarbon originally produced in 1948 by J. Hyman & Co, Denver, as an insecticide. Dieldrin is closely related to aldrin, which reacts further to form dieldrin. Aldrin is not toxic to insects; it is oxidized in the insect to form dieldrin which is the active compound...

 are unavoidable, and can also be detected in infant formulas. Pesticides and other toxic substances bioaccumulate; i.e., creatures higher up the food chain
Food chain
A food web depicts feeding connections in an ecological community. Ecologists can broadly lump all life forms into one of two categories called trophic levels: 1) the autotrophs, and 2) the heterotrophs...

 will store more of them in their body fat. This is an issue in particular for the Inuit
Inuit
The Inuit are a group of culturally similar indigenous peoples inhabiting the Arctic regions of Canada , Denmark , Russia and the United States . Inuit means “the people” in the Inuktitut language...

, whose traditional diet
Inuit diet
Inuit consume a diet of foods that are fished, hunted, and gathered locally. This may include walrus, Ringed Seal, Bearded Seal, beluga whale, caribou, polar bear, muskoxen, birds and fish. While it is not possible to cultivate plants for food in the Arctic the Inuit have traditionally gathered...

 is predominantly meat. Studies are looking at the effects of polychlorinated biphenyls and persistent organic pollutants in the body; the breast milk of Inuit mothers is extraordinarily high in toxic compounds.

Extraordinary consumption

Spanish
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

 king Alfonso XIII visited the region of Las Hurdes
Las Hurdes
Las Hurdes is a comarca in the Sistema Central, at the northern end of province of Cáceres of Extremadura, one of Spain's seventeen Autonomous Communities.-Description:...

 in 1922 in order to display the concern of the crown. The king and his retinue lived in military tents planted near the town of Casares de las Hurdes
Casares de las Hurdes
Casares de las Hurdes , is a municipality located in Las Hurdes, province of Cáceres, Extremadura, Spain. According to the 2006 census , the municipality has a population of 582 inhabitants...

. During the king's visit, a strange incident took place: A local village chief, concerned that the king was drinking only black coffee
Black Coffee
Black coffee may refer to:* Coffee, served as a beverage without cream or milk-Music:* "Black Coffee" , written by Sonny Burke, the lyrics by Paul Francis Webster* Black Coffee , 1956...

 (a consequence of the king's aides distrusting the quality of the local milk owing to unsanitary conditions in the area), served the king a small jug of milk saying, "Your Majesty rest assured that this milk is totally trustworthy," which turned out to be breast milk from his wife who had recently given birth. The king became aware of this fact only after having had his café con leche
Café con leche
Café con leche is a Spanish coffee beverage. More similar to the Italian caffe latte than to the French café au lait, café con leche is a coffee beverage consisting of strong or bold coffee mixed with scalded milk in approximately a 1:1 ratio...

.

Preliminary research indicates that breast milk can induce apoptosis
Apoptosis
Apoptosis is the process of programmed cell death that may occur in multicellular organisms. Biochemical events lead to characteristic cell changes and death. These changes include blebbing, cell shrinkage, nuclear fragmentation, chromatin condensation, and chromosomal DNA fragmentation...

 in some types of cancer cells. Adults with GI disorders and organ donation recipients can also benefit from the immunologic powers of human breast milk.

In Costa Rica, there have been trials to produce cheese and custard from human milk as an alternative to weaning
Weaning
Weaning is the process of gradually introducing a mammal infant, either human or animal, to what will be its adult diet and withdrawing the supply of its mother's milk.The process takes place only in mammals, as only mammals produce milk...

.

A controversial Swiss restaurateur has created a menu based around foods cooked in human breast milk.

An Icecreamists in London's Covent Garden started selling an ice cream named Baby Gaga in February 2011. Each serving costs £14. All the milk was donated by Mrs Hiley who earns £15 for every 10 ounces and calls it a "great recession beater". The ice cream sold out on its first day. Despite the success of the new flavour, the Westminster Council officers removed the product from the menu to make sure that it was, as they said, "fit for human consumption", disregarding the obvious fact that breast milk is fit for, at least, human baby consumption.

See also

  • Lactation
    Lactation
    Lactation describes the secretion of milk from the mammary glands and the period of time that a mother lactates to feed her young. The process occurs in all female mammals, however it predates mammals. In humans the process of feeding milk is called breastfeeding or nursing...

  • Lactation room
    Lactation room
    Lactation room is an American term for a private room where a breastfeeding woman can use a breast pump in private one or more times a day.-Purpose:...

  • Breast pump
    Breast pump
    A breast pump is a mechanical device that extracts milk from the breasts of a lactating woman. Breast pumps may be manual devices powered by hand or foot movements or electrical devices powered by mains electricity or batteries.- History :...

  • Human milk banking in North America
    Human Milk Banking In North America
    A human milk bank is "a service which collects, screens, processes, and dispenses by prescription human milk donated by nursing mothers who are not biologically related to the recipient infant". There are currently eleven milk banks in North America. They are usually housed in hospitals, although...

  • Infant formula
    Infant formula
    Infant formula is a manufactured food designed and marketed for feeding to babies and infants under 12 months of age, usually prepared for bottle-feeding or cup-feeding from powder or liquid . The U.S...

  • Donor Expressed Breast Milk
    Donor Expressed Breast Milk
    Donor Expressed Breast Milk is milk collected from lactating females to be used for new born babies. Breast milk contains all the essentials nutrients that are need for the baby to grow. Some mothers do not have enough breast milk to feed their babies, but do not want feed with infant formula....

  • Mary Rose Tully
    Mary Rose Tully
    Mary Rose Tully , MPH, IBCLC, was a noted lactation consultant, director of the Department of Lactation Services at the University of North Carolina's Women's Hospital, and an adjunct clinical instructor of pediatrics at the University of North Carolina's School of Medicine. She researched and...


External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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