R 3
3.1 Define nutrition. Write in detail the functions, sources of proteins
and protein energy malnutrition (PEM).
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According to World Health Organization, protein energy malnutrition (PEM) refers to “an imbalance between the supply of protein and energy and the body's demand for them to ensure optimal growth and function”.[1] It is a major public health problem in India.Malnutrition may result from inadequate protein intake relative to energy (kwashiorkor) or inadequate energy intake relative to protein (marasmus). Micronutrient intake of vitamins, mineral, and trace elements is closely linked to overall macronutrient intake.
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