World Hunger
Education Service
(Also see World Child Hunger Facts)
This fact sheet is divided into the following sections:
- Hunger concepts and definitions
- Number of hungry people in the world
- Children and hunger
- Does the world produce enough food to feed everyone?
- Causes of hunger
- Progress in reducing the number of hungry people
- Micronutrients
Hunger is a term which has three meanings (Oxford English Dictionary 1971)
- the uneasy or painful sensation caused by want of food; craving appetite. Also the exhausted condition caused by want of food
- the want or scarcity of food in a country
- a strong desire or craving World hunger refers to the second definition, aggregated to the world level. The related technical term (in this case operationalized in medicine) is either malnutrition, or, if malnutrition is taken to refer to both undernutrition and overnutrition, undernutrition. Both malnutrition and undernutrition refer to not having enough food.
Malnutrition (or undernutrition) is a general term
that indicates a lack of some or all nutritional elements
necessary for human health (Medline
Plus Medical Encyclopedia).
There are two basic types of malnutrition. The first and most important is
protein-energy malnutrition (PEM). It is
basically a lack of calories and protein. Food is converted
into energy by humans, and the energy contained in food is
measured by calories. Protein is necessary for key
body functions including provision of essential amino acids
and development and maintenance of muscles. This is
the most lethal form of malnutrition/hunger and is the type
of malnutrition that is referred to when world hunger is
discussed.
The second type of malnutrition, also very important, is micronutrient (vitamin
and mineral) deficiency. This is not the type of malnutrition that is
referred to when world hunger is discussed, though it is certainly very
important.
The United Nations Food and Agriculture Organization estimates that
nearly 870 million people of the 7.1 billion people in the world, or one
in eight, were suffering
from chronic undernourishment in 2010-2012. Almost all the hungry
people, 852 million, live in developing countries, representing 15
percent of the population of developing counties. There are 16 million
people undernourished in developed countries
(FAO
2012).
The number of undernourished people decreased nearly 30 percent
in Asia and the Pacific, from 739 million to 563 million, largely due to
socio-economic progress in many countries in the region.
The prevalence of undernourishment in the region decreased from 23.7
percent to 13.9 percent.
Latin America and the Caribbean also made progress, falling from
65 million hungry in 1990-1992 to 49 million in 2010-2012, while the
prevalence of undernourishment dipped from 14.6 percent to 8.3 percent.
But the rate of progress has slowed recently.
The number of hungry grew in Africa over the period, from 175
million to 239 million, with nearly 20 million added
in the last few years. Nearly one in four are hungry. And in
sub-Saharan Africa, the modest progress achieved in recent years up to
2007 was reversed, with hunger rising 2 percent per year since then.
Developed regions also saw the number of hungry rise, from 13
million in 2004-2006 to 16 million in 2010-2012, reversing a steady
decrease in previous years from 20 million in 1990-1992
(FAO
2012).
The above is based on the new estimates of world hunger by the FAO
using revised proceedures. It is worth noting that the new
estimates give a different answer than the old estimates as the graph
below shows (Lappe, 2013).
Children are the most visible victims
of undernutrition. Children who are poorly nourished
suffer up to 160 days of illness each year. Poor nutrition plays a role in at least half of the 10.9
million child deaths each year--five million deaths.
Undernutrition magnifies the effect of every disease,
including measles and malaria.
The estimated proportions of deaths in which undernutrition
is an underlying cause are roughly similar for diarrhea
(61%), malaria (57%), pneumonia (52%), and measles (45%)
(Black 2003, Bryce 2005).
Malnutrition can also be caused by diseases, such as
the diseases that cause diarrhea, by reducing the body's
ability to convert food into usable nutrients.
According to the most recent estimate that Hunger Notes
could find, malnutrition, as measured by stunting, affects
32.5 percent of children in developing countries--one of
three
(de Onis 2000). Geographically, more
than 70 percent of malnourished children live in Asia, 26 percent in
Africa and 4 percent in Latin America and the Caribbean.
In many cases, their plight began even before birth with a
malnourished mother. Under-nutrition among pregnant
women in developing countries leads to 1 out of 6 infants
born with low birth weight. This is not only a risk factor
for neonatal deaths, but also causes learning disabilities,
mental, retardation, poor health, blindness and premature
death.
The world produces enough food to feed everyone. World agriculture produces 17 percent
more calories per person today than it did 30 years ago,
despite a 70 percent population increase. This is enough to
provide everyone in the world with at least 2,720
kilocalories (kcal) per person per day according to
the most recent estimate that we could find (FAO 2002,
p.9). The principal problem is that many
people in the world do not have sufficient land to grow, or
income to purchase, enough food.
What are the causes of hunger is a fundamental question, with varied answers.
Poverty is the principal cause of
hunger. The causes of poverty include poor people's lack
of resources, an extremely unequal income distribution in
the world and within specific countries, conflict, and
hunger itself. As of 2008 (2005 statistics), the World Bank
has estimated that there were an estimated 1,345 million poor
people in developing countries who live on $1.25 a day or less.1 This compares to the
later FAO estimate of 1.02 billion undernourished
people. Extreme poverty remains an alarming problem in
the world’s developing regions, despite some progress that
reduced "dollar--now $1.25-- a day" poverty from (an
estimated) 1900 million
people in 1981, a reduction of 29 percent over the period. Progress in
poverty reduction has been concentrated in Asia, and
especially, East Asia, with the major improvement occurring
in China. In Sub-Saharan Africa, the number of people in
extreme poverty has increased. The statement that
'poverty is the principal cause of hunger' is, though
correct, unsatisfying. Why then are (so many) people
poor? The next section summarizes Hunger Notes
answer.
Harmful economic systems are the principal cause of poverty and hunger.
Hunger Notes believes that the principal underlying cause of
poverty and hunger is the ordinary operation of the economic
and political systems in the world. Essentially control over
resources and income is based on military, political and
economic power that typically ends up in the hands of a
minority, who live well, while those at the bottom barely
survive, if they do. We have described the operation of this
system in more detail in our special section on
Harmful economic systems.
Conflict as a cause of hunger and poverty. At the
end of 2005, the global number of refugees was at its lowest
level in almost a quarter of a century. Despite some
large-scale repatriation movements, the last three years
have witnessed a significant increase in refugee numbers,
due primarily to the violence taking place in Iraq and
Somalia. By the end of 2008, the total number of refugees
under UNHCR’s mandate exceeded 10 million. The number of
conflict-induced internally displaced persons (IDPs) reached
some 26 million worldwide at the end of the year . Providing
exact figures on the number of stateless people is extremely
difficult But,
important, (relatively) visible though it is, and anguishing
for those involved conflict is
less important as poverty (and its causes) as a cause of hunger. (Using the
statistics above 1.02 billion people suffer from chronic
hunger while 36 million people are displaced [UNHCR 2008])
Hunger is also a cause of poverty, and thus of hunger. By causing poor
health, low levels of energy, and even mental impairment,
hunger can lead to even greater poverty by reducing people's
ability to work and learn, thus leading to even greater
hunger.
Climate change Climate change is increasingly
viewed as a current and future cause of hunger and poverty.
Increasing drought, flooding, and changing climatic patterns
requiring a shift in crops and farming practices that may
not be easily accomplished are three key issues. See
the Hunger Notes special report:
Hunger, the
environment, and climate change for further information,
especially articles in the section: Climate change, global
warming and the effect on poor people such as
Global warming causes 300,000 deaths a year, study says and
Could food shortages bring down civilization?
There are two sets of issues that must be considered in
evaluating progress: estimations of hunger, and goals set.
Estimations of hunger. As indicated above, the two FAO
estimations differ. Specifically, since 1992, the earlier estimate
has hunger going up, while the later has hunger going down.
Secondly, how do you evaluate progress—what goals have been
set.
The target set at the 1996 World Food Summit was to halve the
number of undernourished people by 2015 from their number in 1990-92.
The target set by the Millenium goals was to halve the proportion
of hungry people by 2015
World Food Summit target. The target set at the 1996 World Food Summit was to halve
the number of undernourished people by 2015 from their
number in 1990-92. (FAO uses three year averages in its
calculation of undernourished people.)
Progress using the
old estimate of world hunger. The number of undernourished people in developing countries using
the old estimate
was 824 million in 1990-92. In 2010-2012, the number had
increased to 870 million people. So rather than being
cut in half to 420, the number has increased to 870 million.
Using
the new estimates of world hunger, the number of undernourished people
was 1 billion in 1990-92 and had decreased to 870 in 2010-12, with the
goal 500 million people.
Millenium goal target. Using the old estimates, there were 824
million hungry people in 1990-92 and the world population was 5,370
million (US census estimates for 1991). Thus the proportion
was .143 and halving it would be .071. The current proportion (870
million hungry divided by 2013 world population of 7,095) is .122.
Thus in 2013 the world is .051 of world population away from reaching
this target, or 362 million people.
Using the new estimates, there were 1 billion hungry people in
1990-92 and and the world population was 5,370 million (US
census estimates for 1991). Thus the proportion was .18 and
halving it would be .09. The current proportion (870 million
hungry divided by 2013 world population of 7,095) is .123. Thus in
2013, the world is .033 away, or 234 million people, from reaching
this target.
Thus, in summary, the world is from 870 million to 234 million people
away from reaching a hunger reduction goal, depending on which goal and
which estimate is chosen.
Quite a few
trace elements or micronutrients--vitamins and minerals--are
important for health. 1 out of 3 people in developing
countries are affected by vitamin and mineral deficiencies,
according to the World Health Organization. Three, perhaps
the most important in terms of health consequences
for poor people in developing countries, are:
Vitamin A Vitamin A deficiency
can cause night blindness and reduces the body's resistance
to disease. In children Vitamin A deficiency can also cause
growth retardation. Between 100 and 140 million children are
vitamin A deficient. An estimated 250,000 to 500 000 vitamin
A-deficient children become blind every year, half of them
dying within 12 months of losing their sight. (World Health
Organization)
Iron Iron deficiency is a
principal cause of anemia. Two billion people—over 30
percent of the world’s population—are anemic, mainly due to
iron deficiency, and, in developing countries, frequently
exacerbated by malaria and worm infections. For children,
health consequences include premature birth, low birth
weight, infections, and elevated risk of death. Later,
physical and cognitive development are impaired, resulting
in lowered school performance. For pregnant women, anemia
contributes to 20 percent of all maternal deaths (World
Health Organization).
Iodine Iodine deficiency
disorders (IDD) jeopardize children´s mental health– often
their very lives. Serious iodine deficiency during pregnancy
may result in stillbirths, abortions and congenital
abnormalities such as cretinism, a grave, irreversible form
of mental retardation that affects people living in
iodine-deficient areas of Africa and Asia. IDD also causes
mental impairment that lowers intellectual prowess at home,
at school, and at work. IDD affects over 740 million people,
13 percent of the world’s population. Fifty million people
have some degree of mental impairment caused by IDD (World
Health Organization).
(Updated July 27, 2013)
1. The table used to calculate
this number.
Region | % in $1.25 a day poverty | Population (millions) | Pop. in $1 a day poverty (millions) |
East Asia and Pacific | 16.8 | 1,884 | 316 |
Latin America and the Caribbean | 8.2 | 550 | 45 |
South Asia | 40.4 | 1,476 | 596 |
Sub-Saharan Africa | 50.9 | 763 | 388 |
Total Developing countries | 28,8 | 4673 | 1345 |
Europe and Central Asia | 0.04 | 473 | 17 |
Middle East and North Africa | 0.04 | 305 | 11 |
Total | 5451 | 1372 |
Source: See World
Bank PovcalNet "Replicate the World Bank's Regional
Aggregation" at
http://iresearch.worldbank.org/PovcalNet/povDuplic.html
(accessed May 7, 2010). Also see World Bank "PovcalNet"
at
http://web.worldbank.org/WBSITE/EXTERNAL/EXTDEC/EXTRESEARCH/EXTPROGRAMS/EXTPOVRES/EXTPOVCALNET/0,,contentMDK:21867101~pagePK:64168427~piPK:64168435~theSitePK:5280443,00.html
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Source:
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