Undernutrition in children

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Malnutrition in children
Malnutrition due to STH 2.jpg
Malnutrition due to soil transmitted helminth infections in school-age children in Guimaras Island, Philippines
Symptoms Stunted growth, underweight, wasting [1]
Deaths1 million a year [2]

Undernutrition in children, occurs when children do not consume enough calories, protein, or micronutrients to maintain good health. [3] [4] It is common globally and may result in both short and long term irreversible adverse health outcomes. Undernutrition is sometimes used synonymously with malnutrition, however, malnutrition could mean both undernutrition or overnutrition (causing childhood obesity). The World Health Organization (WHO) estimates that malnutrition accounts for 54 percent of child mortality worldwide, [5] which is about 1 million children. [2] Another estimate, also by WHO, states that childhood underweight is the cause for about 35% of all deaths of children under the age of five worldwide. [6]

Contents

The main causes of malnutrition are often related to poverty: unsafe water, inadequate sanitation or insufficient hygiene, factors related to society, diseases, maternal factors, gender issues as well as other factors.

Background

Starved child in Somalia VOA Heinlein - Somali refugees September 2011 - 09.jpg
Starved child in Somalia

Linked to 1⁄3 of all child deaths, malnutrition is especially dangerous for women and children. Malnourished women will usually have malnourished fetuses while they are pregnant, which can lead to physically and mentally stunted children, creating a cycle of malnutrition and underdevelopment. One of the most severe at risk populations are children under 5. [7] Malnutrition during the early stages of development can have negative and severe effects on growth and intellectual development. This effect on a child's intellectual quotient makes it harder for them later in life to achieve their true potential abilities. Breaking the cycle of malnutrition during early childhood development can break the cycle of intergenerational poverty among poor communities. [7]

There are a variety of ways in which malnutrition can affect the body. Globally, 162 million children show symptoms of malnutrition such as stunting, which is an indicator of malnourishment. [7] The WHO reported that two out of five children that are stunted live in Southern Asia, however Africa is the only region where there is an increasing number of stunted children. [8] Common micronutrient deficiencies are iron, zinc, iodine, and vitamin A. Micronutrient deficiencies can cause an increase of illness due to a compromised immune systems or abnormal physiology and development. [9]

Protein-Energy Malnutrition (PEM) is another form of malnutrition that affects children. PEM can appear as conditions called marasmus, kwashiorkor, and an intermediate state of marasmus-kwashiorkor. Although malnutrition can have severe and lasting health effects on women and children, they are still susceptible to other water-related dangers. [10]

Signs and symptoms

A child's upper arm is measured to detect malnutrition in the village of Baggad, in Madhya Pradesh's Dhar district (India) Measuring for malnutrition in Madhya Pradesh (8816985582).jpg
A child's upper arm is measured to detect malnutrition in the village of Baggad, in Madhya Pradesh's Dhar district (India)

Measures

Children under the age of five are most likely to experience malnutrition and often face a variety of diseases and growth inhibitors as a result. [11] There are three commonly used measures for detecting malnutrition in children:

In terms of more immediate risk factors for malnutrition and the many growth impairments that accompany it, a child’s gender, age, and size at birth are all decent indicators of their likelihood of presenting as stunted or wasted. [12] These measures of malnutrition are interrelated, but studies for the World Bank found that only 9 percent of children exhibit stunting, underweight, and wasting. [1]

Children with severe acute malnutrition are very thin, but they often also have swollen hands and feet, making the internal problems more evident to health workers. [13]

Children with severe malnutrition are very susceptible to infection. [5]

Effects later in life

Undernutrition in children causes direct structural damage to the brain and impairs infant motor development and exploratory behavior. [14] Children who are undernourished before age two and gain weight quickly later in childhood and in adolescence are at high risk of chronic diseases related to nutrition. [14]

Studies have found a strong association between undernutrition and child mortality. [15] Once malnutrition is treated, adequate growth is an indication of health and recovery. [5] Even after recovering from severe malnutrition, children often remain stunted for the rest of their lives. [5]

Even mild degrees of malnutrition double the risk of mortality for respiratory and diarrheal disease mortality and malaria. [5] This risk is greatly increased in more severe cases of malnutrition. [5]

Malnutrition often results in many diseases and health concerns that require immediate medical attention. Of these side effects, there is an emphasis on addressing the increased risk of hypoglycemia, hypothermia, cardiac failure, and the likelihood of missing the presence of an infection. All of these complications can result in severe health effects. [16]

Prenatal malnutrition and early life growth patterns can alter metabolism and physiological patterns and have lifelong effects on the risk of cardiovascular disease. [14] Children who are undernourished are more likely to be short in adulthood, have lower educational achievement and economic status, and give birth to smaller infants. [14] Children often face malnutrition during the age of rapid development, which can have long-lasting impacts on health. [5] Hospitals can and should diagnose, manage and prioritize treatments for malnutrition in order to alleviate long-lasting impacts. [16]

Causes

The prevalence of child stunting generally increases as cities become smaller and moving away from urban centres while child wasting and overweight are lower and exhibit less evident trends across the rural-urbann continuum. The prevalence of child stunting generally increases as cities become smaller and moving away from urban centres; child wasting and overweight are lower and exhibit less evident trends across the rural-urbann continuum.svg
The prevalence of child stunting generally increases as cities become smaller and moving away from urban centres while child wasting and overweight are lower and exhibit less evident trends across the rural-urbann continuum.

Inadequate food intake, infections, psychosocial deprivation, the environment (lack of sanitation and hygiene), social inequality and perhaps genetics contribute to childhood malnutrition. [5] [ page needed ]

Inadequate food intake

A child with Kwashiorkor caused by inadequate dietary protein intake, show signs of thinning hair or "Flag Sign", edema, inadequate growth, and weight loss. Kwashiorkor 6180.jpg
A child with Kwashiorkor caused by inadequate dietary protein intake, show signs of thinning hair or "Flag Sign", edema, inadequate growth, and weight loss.

Inadequate food intake such as a lack of proteins can lead to Kwashiorkor, Marasmus and other forms of Protein–energy malnutrition.[ citation needed ]

Sanitation

Poor sanitary conditions in the environment that can contribute to malnutrition and disease in children (Kibera, Kenya) Children and open sewer in Kibera.jpg
Poor sanitary conditions in the environment that can contribute to malnutrition and disease in children (Kibera, Kenya)

The World Health Organization estimated in 2008 that globally, half of all cases of undernutrition in children under five were caused by unsafe water, inadequate sanitation, or insufficient hygiene. [6] This link is often due to repeated diarrhea and intestinal worm infections as a result of inadequate sanitation. [17] However, the relative contribution of diarrhea to undernutrition and, in turn, stunting remains controversial. [18]

Social inequality

In almost all countries, the poorest quintile of children has the highest rate of malnutrition. [1] However, inequalities in malnutrition between children of poor and rich families vary from country to country, with studies finding large gaps in Peru and very small gaps in Egypt. [1] In 2000, rates of child malnutrition were much higher in low- income countries (36 percent) compared to middle-income countries (12 percent) and the United States (1 percent). [1]

Studies in Bangladesh in 2009 found that the mother's illiteracy, low household income, higher number of siblings, less access to mass media, less supplementation of diets, unhygienic water and sanitation are associated with chronic and severe malnutrition in children. [19]

Diseases

Diarrhea and other infections can cause malnutrition through decreased nutrient absorption, decreased intake of food, increased metabolic requirements, and direct nutrient loss. [20] Parasite infections, in particular intestinal worm infections (helminthiasis), can also lead to malnutrition. [20] A leading cause of diarrhea and intestinal worm infections in children in developing countries is a lack of sanitation and hygiene. Other diseases that cause chronic intestinal inflammation may lead to malnutrition, such as some cases of untreated celiac disease and inflammatory bowel disease. [21] [22] [23]

Children with chronic diseases like HIV have a higher risk of malnutrition, since their bodies cannot absorb nutrients as well. [13] Diseases such as measles are a major cause of malnutrition in children; thus, immunizations present a way to relieve the burden. [13]

Maternal factors

The nutrition of children 5 years and younger depends strongly on the nutrition level of their mothers during pregnancy and breastfeeding. [24]

Infants born to young mothers who are not fully developed are found to have low birth weights. [25] The level of maternal nutrition during pregnancy can affect a newborn baby's body size and composition. [14] Iodine deficiency in mothers usually causes brain damage in their offspring, and some cases cause extreme physical and intellectual disability. This affects the children's ability to achieve their full potential. In 2011 UNICEF reported that 30 percent of households in the developing world were not consuming iodized salt, which accounted for 41 million infants and newborns in whom iodine deficiency could still be prevented. [26] Maternal body size is strongly associated with the size of newborn children. [14]

Short stature of the mother and poor maternal nutrition stores increase the risk of intrauterine growth retardation (IUGR). [14] However, environmental factors can weaken the effect of IUGR on cognitive performance. [14]

Gender

A study in Bangladesh in 2008 reported that rates of malnutrition were higher in female children than male children. [19] Other studies show that, at the national level, differences between undernutrition prevalence rates between young boys and girls are generally small. [27] Girls often have a lower nutritional status in South and Southeastern Asia compared to boys. [27] In other developing regions, the nutritional status of girls is slightly higher. [27]

Diagnosis

Measurements of a child's growth provide the key information for the presence of malnutrition. However, weight and height measurements alone can lead to failure to recognize kwashiorkor and an underestimation of the severity of malnutrition in children. [5]

Since undernourished children are also more likely to die from preventable infections, there is some research into developing a rapid diagnostic tool to detect malnourishment and common infections from a drop of blood. This research was spearheaded by Evelyn Gitau. [28] [29]

Prevention

School lunches are an important tool to address childhood malnutrition. "Every child Needs a Good School Lunch" - NARA - 514223 - Retouched.jpg
School lunches are an important tool to address childhood malnutrition.

Measures have been taken to reduce child malnutrition. Studies for the World Bank found that, from 1970 to 2000, the number of malnourished children decreased by 20 percent in developing countries. [1] Iodine supplement trials in pregnant women have been shown to reduce offspring deaths during infancy and early childhood by 29 percent. [13] However, universal salt iodization has largely replaced this intervention. [13]

The Progresa program in Mexico combined conditional cash transfers with nutritional education and micronutrient-fortified food supplements; this resulted in a 10 percent reduction in the prevalence of stunting in children 12–36 months old. [15] Milk fortified with zinc and iron reduced the incidence of diarrhea by 18 percent in a study in India. In Nigeria, the use of imported Ready to Use Therapeutic Food (RUTF) has been used to combat malnutrition in the North. However, research has shown that Soy Kunu, a locally sourced and prepared blend consisting of peanut, millet, and soya beans, contains the components of the Ready to Use Therapeutic Food (RUTF) and this has been used massively to reduce malnutrition in the north. [31]

Breastfeeding

Breastfeeding can reduce rates of malnutrition and dehydration caused by diarrhea, but mothers are sometimes wrongly advised not to breastfeed their children. [13] Breastfeeding has been shown to reduce mortality in infants and young children. [15] Since only 38 percent of children worldwide under 6 months are exclusively breastfed, education programs could have large impacts on children's malnutrition rates. [32] However, breastfeeding cannot fully prevent PEM if not enough nutrients are consumed. [5]

Treatment

Getting support to children with malnutrition in Kenya Getting life-saving support to children with malnutrition in Kenya (6219642149).jpg
Getting support to children with malnutrition in Kenya

Treatment with antibiotics such as amoxicillin or cefdinir improves the response and survival rate of severely malnourished children to an outpatient treatment plan which provided therapeutic food. [2] This confirms the recommendation, "In addition to the provision of RUTF [ready-to-use therapeutic food], children need to receive a short course of basic oral medication to treat infections." contained in "Community-based management of severe acute malnutrition, A Joint Statement by the World Health Organization, the World Food Programme, the United Nations System Standing Committee on Nutrition and the United Nations Children's Fund." [33]

Epidemiology

The World Health Organization estimates that malnutrition accounts for 54 percent of child mortality worldwide, [5] about 1 million children. [2] Another estimate also by WHO states that childhood underweight is the cause for about 35% of all deaths of children under the age of five years worldwide. [6]

According to a 2008 review, an estimated 178 million children under age 5 are stunted, most of whom live in sub-Saharan Africa. [15] A 2008 review of malnutrition found that about 55 million children are wasted, including 19 million who have severe wasting or severe acute malnutrition. [15] In 2020, a research paper that mapped stunting, wasting, and underweight among children across 105 low- and middle-income countries found that only five countries were expected to meet global nutrition targets in all second administrative subdivisions. [34]

As underweight children are more vulnerable to almost all infectious diseases, the indirect disease burden of malnutrition is estimated to be an order of magnitude higher than the disease burden of the direct effects of malnutrition. [6] The combination of direct and indirect deaths from malnutrition caused by unsafe water, sanitation, and hygiene (WASH) practices is estimated to lead to 860,000 deaths per year in children under five years of age. [6]

See also

Related Research Articles

<span class="mw-page-title-main">Kwashiorkor</span> Severe protein malnutrition

Kwashiorkor is a form of severe protein malnutrition characterized by edema and an enlarged liver with fatty infiltrates. It is thought to be caused by sufficient calorie intake, but with insufficient protein consumption, which distinguishes it from marasmus. Recent studies have found that a lack of antioxidant micronutrients such as β-carotene, lycopene, other carotenoids, and vitamin C as well as the presence of aflatoxins may play a role in the development of the disease. However, the exact cause of kwashiorkor is still unknown. Inadequate food supply is correlated with occurrences of kwashiorkor; occurrences in high income countries are rare. It occurs amongst weaning children to ages of about five years old.

<span class="mw-page-title-main">Diarrhea</span> Loose or liquid bowel movements

Diarrhea, also spelled diarrhoea or diarrhœa, is the condition of having at least three loose, liquid, or watery bowel movements in a day. It often lasts for a few days and can result in dehydration due to fluid loss. Signs of dehydration often begin with loss of the normal stretchiness of the skin and irritable behaviour. This can progress to decreased urination, loss of skin color, a fast heart rate, and a decrease in responsiveness as it becomes more severe. Loose but non-watery stools in babies who are exclusively breastfed, however, are normal.

<span class="mw-page-title-main">Human nutrition</span> Nutrients supporting human health

Human nutrition deals with the provision of essential nutrients in food that are necessary to support human life and good health. Poor nutrition is a chronic problem often linked to poverty, food security, or a poor understanding of nutritional requirements. Malnutrition and its consequences are large contributors to deaths, physical deformities, and disabilities worldwide. Good nutrition is necessary for children to grow physically and mentally, and for normal human biological development.

<span class="mw-page-title-main">Malnutrition</span> Medical condition caused by receiving too little or too many nutrients

Malnutrition occurs when an organism gets too few or too many nutrients, resulting in health problems. Specifically, it is a deficiency, excess, or imbalance of energy, protein and other nutrients which adversely affects the body's tissues and form.

<span class="mw-page-title-main">Marasmus</span> Medical condition

Marasmus is a form of severe malnutrition characterized by energy deficiency. It can occur in anyone with severe malnutrition but usually occurs in children. Body weight is reduced to less than 62% of the normal (expected) body weight for the age. Marasmus occurrence increases prior to age 1, whereas kwashiorkor occurrence increases after 18 months. It can be distinguished from kwashiorkor in that kwashiorkor is protein deficiency with adequate energy intake whereas marasmus is inadequate energy intake in all forms, including protein. This clear-cut separation of marasmus and kwashiorkor is however not always clinically evident as kwashiorkor is often seen in a context of insufficient caloric intake, and mixed clinical pictures, called marasmic kwashiorkor, are possible. Protein wasting in kwashiorkor generally leads to edema and ascites, while muscular wasting and loss of subcutaneous fat are the main clinical signs of marasmus, which makes the ribs and joints protrude.

Micronutrients are essential dietary elements required by organisms in varying quantities to regulate physiological functions of cells and organs. Micronutrients support the health of organisms throughout life.

<span class="mw-page-title-main">Health in India</span> Overview of health in India

India's population in 2021 as per World Bank is 1.39 billion. Being the world's most populous country and one of its fastest-growing economies, India experiences both challenges and opportunities in context of public health. India is a hub for pharmaceutical and biotechnology industries; world-class scientists, clinical trials and hospitals yet country faces daunting public health challenges like child undernutrition, high rates of neonatal and maternal mortality, growth in noncommunicable diseases, high rates of road traffic accidents and other health related issues.

<span class="mw-page-title-main">Stunted growth</span> Reduced growth rate in human development

Stunted growth, also known as stunting or linear growth failure, is defined as impaired growth and development manifested by low height-for-age. It is a primary manifestation of malnutrition and recurrent infections, such as diarrhea and helminthiasis, in early childhood and even before birth, due to malnutrition during fetal development brought on by a malnourished mother. The definition of stunting according to the World Health Organization (WHO) is for the "height-for-age" value to be less than two standard deviations of the median of WHO Child Growth Standards. Stunted growth is usually associated with poverty, unsanitary environmental conditions, maternal under-nutrition, frequent illness, and/or inappropriate feeding practice and care during early years of life.

<span class="mw-page-title-main">Protein–energy malnutrition</span> Medical condition

Protein–energy undernutrition (PEU), once called protein-energy malnutrition (PEM), is a form of malnutrition that is defined as a range of conditions arising from coincident lack of dietary protein and/or energy (calories) in varying proportions. The condition has mild, moderate, and severe degrees.

<span class="mw-page-title-main">Vitamin A deficiency</span> Disease resulting from low Vitamin A concentrations in the body

Vitamin A deficiency (VAD) or hypovitaminosis A is a lack of vitamin A in blood and tissues. It is common in poorer countries, especially among children and women of reproductive age, but is rarely seen in more developed countries. Nyctalopia is one of the first signs of VAD, as the vitamin has a major role in phototransduction; but it is also the first symptom that is reversed when vitamin A is consumed again. Xerophthalmia, keratomalacia, and complete blindness can follow if the deficiency is more severe.

Health care services in Nepal are provided by both public and private sectors and are generally regarded as failing to meet international standards.

<span class="mw-page-title-main">Health in Bangladesh</span>

Bangladesh is one of the most populous countries in the world, as well as having one of the fastest growing economies in the world. Consequently, Bangladesh faces challenges and opportunities in regards to public health. A remarkable metamorphosis has unfolded in Bangladesh, encompassing the demographic, health, and nutritional dimensions of its populace.

<span class="mw-page-title-main">Health in the Democratic Republic of the Congo</span>

Health problems have been a long-standing issue limiting development in the Democratic Republic of the Congo.

Despite India's 50% increase in GDP since 2013, more than one third of the world's malnourished children live in India. Among these, half of the children under three years old are underweight.

<span class="mw-page-title-main">Save the Children State of the World's Mothers report</span>

The Save the Children State of the World's Mothers report (SOWM report) is an annual report by the Save the Children USA, which compiles statistics on the health of mothers and children and uses them to produce rankings of more than 170 countries, showing where mothers fare best and where they face the greatest hardships. The rankings are presented in the Mothers’ Index, which has been produced annually since the year 2000.

Malnutrition continues to be a problem in the Republic of South Africa, although it is not as common as in other countries of Sub-Saharan Africa.

<span class="mw-page-title-main">Maternal and child health in Tanzania</span>

Both maternal and child health are interdependent and substantially contributing to high burden of mortality worldwide. Every year, 289 000 women die due to complications in pregnancy and childbirth, and 6.6 million children below 5 years of age die of complications in the newborn period and of common childhood diseases. Sub-Saharan Africa (SSA), which includes Tanzania, contribute higher proportion of maternal and child mortality. Due to considerable proportion of mortality being attributed by maternal and child health, the United Nations together with other international agencies incorporated the two into Millennium Development Goals (MDGs) 4 and 5. In this regard, Tanzania through the Ministry of Health and Social Welfare (MoHSW) adopted different strategies and efforts to promote safe motherhood and improve child survival. Similarly, in an effort to improve maternal and child health, Tanzania's government has declared maternal and child health services to be exempt from user fees in government facilities.

Malnutrition is a condition that affects bodily capacities of an individual, including growth, pregnancy, lactation, resistance to illness, and cognitive and physical development. Malnutrition is commonly used in reference to undernourishment, or a condition in which an individual's diet does not include sufficient calories and proteins to sustain physiological needs, but it also includes overnourishment, or the consumption of excess calories.

<span class="mw-page-title-main">Environmental enteropathy</span> Disorder of chronic intestinal inflammation

Environmental enteropathy is an acquired small intestinal disorder characterized by gut inflammation, reduced absorptive surface area in small intestine, and disruption of intestinal barrier function. EE is most common amongst children living in low-resource settings. Acute symptoms are typically minimal or absent. EE can lead to malnutrition, anemia, stunted growth, impaired brain development, and impaired response to oral vaccinations.

<span class="mw-page-title-main">Child health and nutrition in Africa</span>

Child health and nutrition in Africa is concerned with the health care of children through adolescents in the various countries of Africa. The right to health and a nutritious and sufficient diet are internationally recognized human rights that are protected by international treaties. Millennium Development Goals (MDGs) 1, 4, 5 and 6 highlight, respectively, how poverty, hunger, child mortality, maternal health, the eradication of HIV/AIDS, malaria, tuberculosis and other diseases are of particular significance in the context of child health.

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