Malnutrition

• 1. Defining Malnutrition Types

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  In 2017, nearly one in three people globally suffered from at least one form of malnutrition. This condition encompasses both undernutrition and overnutrition, creating a complex health crisis. Undernutrition involves a lack of nutrients leading to stunted growth or wasting. A surplus of nutrients causes overnutrition, which can result in obesity or toxic levels of micronutrients. Most clinical studies historically used the term 'malnutrition' to refer only to undernutrition. However, using this single term makes it impossible to distinguish between these two opposing forms. The World Health Organization and The Lancet Commission now identify the double burden of malnutrition. This occurs when overweight and obesity coexist alongside stunted growth and wasting within the same communities. In some developing countries, obesity is beginning to appear where undernutrition also exists. A 2019 report by The Lancet Commission suggested expanding the definition to include all its forms.

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• 2. Global Prevalence Statistics

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  In 2023, an estimated 28.9 percent of the global population faced moderate or severe food insecurity. That figure represented 2.33 billion people worldwide. The prevalence of undernutrition remains highest among children under five years old. In 2021, 148.1 million children were stunted while 45 million were wasted. Another 37 million children were classified as overweight or obese that same year. UNICEF reported that 45% of deaths in children were linked directly to undernutrition. Wasting rates varied significantly across regions. In South Asia, 16% of children under five were moderately or severely wasted. India carried one of the highest burdens with over 20% of wasted children. African countries showed even higher levels of chronic undernutrition. A pooled analysis identified a 33.3% prevalence rate for chronic undernutrition among under-five children in East Africa. Rates ranged from 21.9% in Kenya to 53% in Burundi. Tanzania saw stunting vary from 41% in lowland areas to 64.5% in highland areas. Vitamin A deficiency affected one third of children under age five globally.

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• 3. Medical Consequences And Symptoms

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  Undernutrition weakens every part of the immune system and increases susceptibility to infection. Deficiencies in specific micronutrients like iron, zinc, and vitamins create critical health risks. Undernutrition plays a major role in the onset of active tuberculosis. It also raises the risk of HIV transmission from mother to child. Children who are malnourished often get infections and frequently feel cold. Extreme undernutrition can cause starvation, Severe Acute Malnutrition, and Moderate Acute Malnutrition. Kwashiorkor is primarily caused by inadequate protein intake. Its symptoms include edema, wasting, liver enlargement, and depigmentation of skin and hair. The condition is further identified by a characteristic swelling of the belly which disguises the patient's undernourished condition. Marasmus results from a sustained diet deficient in both protein and energy. Primary symptoms are severe wasting with little or no edema and minimal subcutaneous fat. Conditions are characterized by extreme wasting of muscles and a gaunt expression. Hypoglycemia causes lethargy, limpness, seizures, and loss of consciousness. Dehydration can occur in malnourished people and be life-threatening especially for babies and small children.

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• 4. Social Determinants Of Hunger

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  High food prices prevent low-income households from getting nutritious food. In Bangladesh, low socioeconomic status was associated with chronic malnutrition since it inhibited purchase of nutritious foods like milk, meat, poultry, and fruits. The probability of overnutrition is significantly higher in higher-income families than in disadvantaged families. Eighty percent of malnourished children live in countries that produce food surpluses according to estimates from the Food and Agriculture Organization. Economist Amartya Sen observes that famine has always been a problem of food distribution and purchasing power. Government policies play a crucial role as poor governments lack health-related services. Certain households face higher risks due to differences in income levels and access to land. Commodity speculators increased the cost of food during the 2007, 2008 food price crisis. Trillions of dollars moved to invest in food and primary commodities when the real-estate bubble collapsed. The use of biofuels as a replacement for traditional fuels raises the price of food. United Nations special rapporteur Jean Ziegler proposed using agricultural waste like corn cobs as fuel instead of crops. Overnutrition increases with urbanization and technological developments while physical activity decreases.

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• 5. Agricultural Production Challenges

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  Local food shortages can be caused by adverse weather and inadequate farming skills. Areas lacking technology or resources needed for modern agriculture see lower yields. Resources include fertilizers, pesticides, irrigation, machinery, and storage facilities. Widespread poverty prevents farmers and governments from providing enough resources to improve local yields. The World Bank and wealthy donor countries pressured developing nations to cut subsidized agricultural inputs. Without subsidies few farmers in developing countries could afford fertilizer at market prices. This leads to low agricultural production and high unaffordable food prices. Fertilizer is increasingly unavailable because Western environmental groups fought to end its use. Global warming threatens food security as almost all malnourished people live in the tropics. Temperature increases make extreme weather conditions occur more frequently. Droughts have major impacts on agricultural production and hence nutrition. The 1998, 2001 Central Asian drought killed about 80 percent of livestock in Iran. Colony collapse disorder represents another threat where bees die in large numbers. Many agricultural crops worldwide are pollinated by bees so their loss disrupts global food supply.

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• 6. Treatment Strategies And Interventions

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  Improving nutrition involves infant and young child feeding practices to reduce rates of malnutrition. Ready-to-use therapeutic foods can treat moderate acute malnutrition in the developing world. These foods may be stored for years and eaten directly from packets without mixing with clean water. In-hospital treatment often involves managing low blood sugar and maintaining adequate body temperature. Routine antibiotics are usually recommended because malnutrition weakens the immune system. The Bangladeshi government recommends ten steps for treating severe malnutrition including preventing dehydration and correcting electrolyte imbalances. Oral rehydration therapy remains the preferred treatment when prevention fails. Reduced-osmolarity oral rehydration solutions contain lower concentrations of sodium and glucose than original preparations. Packets include glucose, table salt, potassium chloride, and trisodium citrate. For general use each packet should be mixed with a liter of water. Experts recommend adding a packet to two liters of water for malnourished children along with extra sucrose. Fortified everyday foods like flour have been enriched with iron zinc folic acid and other B vitamins. Baladi bread is made with fortified wheat flour while iodized salt helps prevent deficiencies.

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