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Two billion people lack key micronutrients like iron and vitamin A worldwide. Another 2 billion adults are overweight or obese. 815 million people go to bed hungry each night. 88% of countries face a serious burden of either two or three forms of malnutrition.

An overview of the estimated percentage of people suffering from one of the 4 main micronutrient deficiencies worldwide is shown in Table 2.3.

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Table 2.3 Table 2.3

Table 2.3: Prevalence of vitamin A deficiency (1995-2005), iodine deficiency (2013), inadequate zinc intake (2005), and iron deficiency anaemia (2011). (Table copied from Black et al. 2013).

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Young children and pregnant women are among the most vulnerable for malnutrition. Although the problem of micronutrient deficiencies affects more people in low- and middle-income countries, we also see problematic percentages of deficiencies in Europe, where iodine deficiency is even estimated to affect 44.2% of population.