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    Glossary: food security
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    A situation that exists when all people, at all times, have physical, social and economic access to sufficient, safe and nutritious food that meets their dietary needs and food preferences for an active and healthy life.
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    Term Definition
    anthropometry Use of human body measurements to obtain information about nutritional status.
     
    Body Mass Index (BMI)A ratio of weight for height often used to estimate body fat. It is obtained by dividing the weight (in kilograms) by the square of the height (in meters). BMI is not appropriate for assessment of growing children, frail and sedentary elderly individuals, or women who are pregnant or breastfeeding.
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    degree of food deprivationA measure of the overall food insecurity situation in a country, based on a classification system that combines prevalence of undernourishment, i.e. proportion of the total population suffering from dietary energy deficit, and depth of undernourishment, i.e. magnitude of the dietary energy deficit of the undernourished population.
     
    dietary energy deficitThe difference between the average daily dietary energy intake of an undernourished population and its average minimum energy requirement.
     
    dietary energy intakeThe energy content of food consumed.
     
    dietary energy requirementThe amount of dietary energy required by an individual to maintain body functions, health and normal activity.
     
    dietary energy supplyFood available for human consumption, expressed in kilocalories per person per day (kcal/person/day). At country level, it is calculated as the food remaining for human use after deduction of all non-food consumption (exports, animal feed, industrial use, seed and wastage).
     
    food insecurityA situation that exists when people lack secure access to sufficient amounts of safe and nutritious food for normal growth and development and an active and healthy life. It may be caused by the unavailability of food, insufficient purchasing power, inappropriate distribution, or inadequate use of food at the household level. Food insecurity, poor conditions of health and sanitation, and inappropriate care and feeding practices are the major causes of poor nutritional status. Food insecurity may be chronic, seasonal or transitory.
     
    food securityA situation that exists when all people, at all times, have physical, social and economic access to sufficient, safe and nutritious food that meets their dietary needs and food preferences for an active and healthy life.
     
    IAWGInter-Agency Working Group.
     
    kilocalorie (kcal)A unit of measurement of energy. One kilocalorie equals 1 000 calories. In the International System of Units (ISU), the universal unit of energy is the joule (J). One kilocalorie = 4.184 kilojoules (kJ).
     
    macronutrientsThe proteins, carbohydrates and fats that are required by the body in large amounts and, available to be used for energy. They are measured in grams.
     
    malnutritionAn abnormal physiological condition caused by deficiencies, excesses or imbalances in energy, protein and/or other nutrients.
     
    micronutrientsThe vitamins, minerals and certain other substances that are required by the body in small amounts. They are measured in milligrams or micrograms.
     
    Millennium Development GoalThe Millennium Development Goals are eight goals that 189 United Nations member states have agreed to try to achieve by the year 2015. The Millennium Development Goals derive from earlier "international development goals", and were officially established at the Millennium Summit in 2000, where 189 world leaders adopted the United Nations Millennium Declaration, from which the eight-goal action plan, the "Millennium Development Goals", was particularly promoted.
     
    minimum dietary energy requirementIn a specified age/sex category, the amount of dietary energy per person that is considered adequate to meet the energy needs for light activity and good health. For an entire population, the minimum energy requirement is the weighted average of the minimum energy requirements of the different age/sex groups in the population. It is expressed as kilocalories per person per day.
     
    NGONon Govermental Organisation.
     
    nutritional statusThe physiological state of an individual that results from the relationship between nutrient intake and requirements and from the body's ability to digest, absorb and use these nutrients.
     
    overnourishmentFood intake that is in excess of dietary energy requirements continuously.
     
    overweight and obesityBody weight that is above normal as a result of an excessive accumulation of fat. It is usually a manifestation of overnourishment. Overweight is defined here as BMI >25-30 and obesity as BMI >30.
     
    small area estimationTechnique that projects estimated parameters from welfare analysis of survey data at higher levels of desegregation (communities or neighbourhoods) usually by employing census data
     
    stuntingLow height for age, reflecting a sustained past episode or episodes of undernutrition.
     
    undernourishmentFood intake that is insufficient to meet dietary energy requirements continuously.
     
    undernutritionThe result of undernourishment, poor absorption and/or poor biological use of nutrients consumed.
     
    underweightLow weight for age in children, and BMI >18.5 in adults, reflecting a current condition resulting from inadequate food intake, past episodes of undernutrition or poor health conditions.
     
    vulnerabilityThe presence of factors that place people at risk of becoming food insecure or malnourished, including those factors that affect their ability to cope.
     
    vulnerable groupA group of people with common characteristics, a high proportion of whom are food-insecure or at risk of becoming food-insecure.
     
    wastingLow weight for height, generally the result of weight loss associated with a recent period of starvation or disease.
     


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